tag:blogger.com,1999:blog-89207959897604283892020-03-29T10:13:58.575-07:00Math Physics BlogUnknownnoreply@blogger.comBlogger279125tag:blogger.com,1999:blog-8920795989760428389.post-18274732803513565352020-03-26T10:04:00.001-07:002020-03-29T10:13:58.477-07:00Virus 101 <font size="4"> <b>Virus 101</b><br><br> What's a virus? It's not a living organism. It's basically a giant molecule that can't do anything except replicate itself. <br><br> But it can't even do that unless it invades a human cell and tricks the molecular machinery of the cell into doing the replication. When the replicated viruses leave the cell, in search of another cell, they burst out and kill the host cell. Nice for the virus. Not nice for the human. <br><br> But this is where the immune system kicks in. It first analyzes the molecular structure of the virus. It then tags it as a foreign object that should not be in the body. And then in manufactures a molecule designed specifically for a given virus. This molecule, called an "antibody", attaches to the virus and disables it. It's a brilliant piece of molecular engineering.<br><br> The problem occurs if the immune system malfunctions. Then the antibody never gets created and the virus never gets disabled. The result can be lethal.<br><br> There are tons of chemicals that can kill a virus, providing the virus is on a surface. If the virus is in a human cell these same chemicals will do more damage to the human cell than they do to the virus. <br><br> The only way to kill a virus inside a human cell is by clever molecular chemistry similar to that used by the immune system. That requires a whole new level of science that we do not yet have. But it's developing fast. One day it will be routine. You'll simply get a shot. But not today.<br><br> Here are the latest numbers..<br><br> <a style="text-decoration:underline" href="https://ncov2019.live/data">Coronavirus Worldwide Stats Live</a><br><br> </font> Content written and posted by Ken Abbott <a style="text-decoration:underline" href="mailto:abbottsystems@gmail.com">abbottsystems@gmail.com</a><br><br>Unknownnoreply@blogger.comtag:blogger.com,1999:blog-8920795989760428389.post-62845868232661203562020-03-03T09:54:00.000-08:002020-03-17T08:13:35.376-07:00Coronavirus Worldwide Stats <font size="4"> <b>Coronavirus Worldwide Stats</b><br><br> China currently has about 80,000 cases in a population of 1.38 billion. The population of the US is about 350 million, so pro-rating the China number gives the predicted number of US cases as 20,000<br><br> But this number could be low, maybe very low, because China did extensive testing and took fast and dramatic action to limit spread. The US did none of these things. <br><br> Here are the latest numbers..<br><br> <a style="text-decoration:underline" href="https://ncov2019.live/data">Coronavirus Worldwide Stats Live</a><br><br> </font> Content written and posted by Ken Abbott <a style="text-decoration:underline" href="mailto:abbottsystems@gmail.com">abbottsystems@gmail.com</a><br><br>Unknownnoreply@blogger.comtag:blogger.com,1999:blog-8920795989760428389.post-30451889989190173882020-02-06T06:12:00.000-08:002020-02-09T13:44:42.771-08:00Do Graviton Oscillations Exist? <font size="4"> <b>Do Graviton Oscillations Exist?</b><br><br> Let's talk for a moment about paper strips!<br><br> Take a strip of paper, join the ends, so you have a band. Let's use this as a model for a spin 0 particle.<br><br> Now give the paper 1 half twist before joining the ends. This is a model for a spin 1/2 particle. <br><br> Now give the paper 2 half twists before joining the ends. This is a spin 1 particle. <br><br> <b>But things get strange.. </b> <br><br> Now give the paper 4 half twists before joining the ends. This is a spin 2 particle. The only one known is the hypothetical graviton, carrier of the gravitational force. But if you play around with this thing for a while it will suddenly flip into a double thickness band with 1 half twist! <br><br> Could this imply that a graviton (spin 2) can transform into a spin 1/2 particle? Assuming charge is conserved this spin 1/2 particle must be neutral and that means a neutrino or some as yet unknown particle. So a Graviton can oscillate into a neutrino? This also means Boson to Fermion transitions are possible.<br><br> This is just a simple model, but if graviton oscillations exist the implications are deep. Graviton oscillation would change physics as we know it. Here are a few possible implications..<br><br> <b>Black Holes evaporate</b><br>You could imagine that graviton oscillation requires high graviton pressure - meaning it can only occur in very intense gravitational fields such as black holes. So black holes evaporate into spin 1/2 neutral particles. <br><br> <b>Black Holes are an intense source of neutrinos</b><br>And very high energy neutrinos.<br><br> <b>The Universe is expanding </b><br>An asymmetry in the oscillation (meaning Boson to Fermion is easier than Fermion to Boson) would lead to weakened gravity and this would cause inflation. <br><br> <b>Boson to Fermion transitions are possible</b> <br>Most physicists will not like this, to say the least.<br><br> </font> Content written and posted by Ken Abbott <a style="text-decoration:underline" href="mailto:abbottsystems@gmail.com">abbottsystems@gmail.com</a><br><br>Unknownnoreply@blogger.comtag:blogger.com,1999:blog-8920795989760428389.post-53637599216559948812020-02-04T08:56:00.000-08:002020-02-05T11:01:04.346-08:00Learn Calculus in 5 Minutes <font size="4"> <b>Learn Calculus in 5 Minutes</b><br><br> Differential calculus is one of the two branches of calculus, the other is integral calculus. Most mathematicians refer to both branches together as simply calculus.<br><br> Calculus is all about functions, so there's no point in studying calculus until you understand the idea of a function.<br><br> Let's take a simple function, say f(x)=x^2<br><br> What's the value of this function at a specific point, say x=a? That's easy, it's f(a)=a^2. But now we ask an interesting question, can we possibly know anything else about the function at point a? At first glance this seems impossible, the value of the function at a is f(a), so surely that's all we can know, right? Wrong. It turns out there's a process called "differentiation" that can tell us more. Here's how it works..<br><br> Take a very small number, say q, and ask what the function is doing at a+q, in other words at a point very close to a.. <br><br> f(a+q)=(a+q)^2=a^2+2*a*q+q^2<br><br> But we can make q as small as we please, which means q^2 is much smaller, so to a good approximation we can ignore it, and we get..<br><br> f(a+q)=(a+q)^2=a^2+2*a*q<br><br> Notice the first term, a^2, is just the value of the function at a, f(a), so now we have..<br><br> f(a+q)=f(a)+2*a*q<br><br> Which means..<br><br> f(a+q)-f(a)=2*a*q<br><br> And so..<br><br> (f(a+q)-f(a))/q=2*a<br><br> What is the meaning of the expression on the left? If you draw a diagram you'll see that the term on the left is simply the slope of the curve f(x) close to x=a. So this gives us some valuable information about what's going on near a. Now all we need to do is keep making q smaller so we get closer and closer to a. In fact, we can use the concept of a limit to say..<br><br> Limit(f(a+q)-f(a))/q as q goes to zero is 2*a<br><br> Of course we could do this for any point a, so in general..<br><br> Limit(f(x+q)-f(x))/q as q goes to zero is 2*x<br><br> This is called the "derivative" of f(x) and is often written as df/dx, or sometimes as f'. So, to summarize..<br><br> The derivative of the function f(x)=x^2 is 2*x and is written df/dx=2*x and it's the slope of the f(x) curve at x. Of course, a slope is simply a rate of change, so we can also say that df/dx=2*x is the rate of change of the function f(x).<br><br> Congratulations, you just did some calculus! You differentiated the function f(x)=x^2 and got the result 2*x<br><br> To generalize this example, the derivative of the function f(x)=x^n where n is any integer is..<br><br> df/dx=n*x^(n-1)<br><br> So for example, if f(x)=x^10 then the derivative is df/dx=10*x^9<br><br> So, the essence of differential calculus is this.. in addition to knowing the value of a function f(x) at x=a we also know the rate of change (slope) of the function at a. Differential calculus gives us an extra piece of information!<br><br> Much of differential calculus is simply finding ways to differentiate different functions. This can get boring, so why bother? Because the derivative of a function is a really useful thing for solving all sorts of problems. It's especially useful in physics and many laws of physics are written as differential equations.<br><br> Here's some derivatives of simple functions..<br><br> f(x)=x^n df/dx=n*x^(n-1)<br>f(x)=e^x df/dx=e^x <br>f(x)=sin(x) df/dx=cos(x)<br>f(x)=cos(x) df/dx=-sin(x)<br><br> </font> Content written and posted by Ken Abbott <a style="text-decoration:underline" href="mailto:abbottsystems@gmail.com">abbottsystems@gmail.com</a><br><br>Unknownnoreply@blogger.comtag:blogger.com,1999:blog-8920795989760428389.post-47124591988675797762020-02-03T05:37:00.001-08:002020-02-03T05:37:10.487-08:00Borromean Rings and the Proton<font size="4"> <b>Borromean Rings and the Proton</b><br><br> <div class="separator" style="clear: both; text-align: center;"><a href="https://4.bp.blogspot.com/-bBislgvuTo4/WnnOqzLzO8I/AAAAAAAAHqs/Oi2jtvQH9LsFphMBQO8DllrXAJHtsadUgCLcBGAs/s1600/borromean-rings.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" src="https://4.bp.blogspot.com/-bBislgvuTo4/WnnOqzLzO8I/AAAAAAAAHqs/Oi2jtvQH9LsFphMBQO8DllrXAJHtsadUgCLcBGAs/s320/borromean-rings.jpg" width="320" height="266" data-original-width="220" data-original-height="183" /></a></div> Here's a nice piece of topology.<br><br> Notice that no two rings are linked, yet all 3 rings are linked.<br><br> You could use this a a model for the proton - the rings representing the 3 quarks that make up a proton and "ring linkage" representing the color force.<br><br> Then we see that the color force is very unusual. It's a 3-force, meaning it only appears when you have 3 objects, the force between any 2 objects being zero.<br><br> This model even shows the famous "asymptotic freedom" and "confinement" of bound quarks. When the rings are very close together you can move them around as if they were free (asymptotic freedom), but when you try to pull them apart a strong force appears to stop you (confinement).<br><br> </font> Content written and posted by Ken Abbott <a style="text-decoration:underline" href="mailto:abbottsystems@gmail.com">abbottsystems@gmail.com</a><br><br>Unknownnoreply@blogger.comtag:blogger.com,1999:blog-8920795989760428389.post-12479496438725599472020-01-30T13:20:00.001-08:002020-01-31T06:43:27.450-08:00In Praise of the Proton<font size="4"> <b>In Praise of the Proton</b><br /><br /> I guess at some point the universe decided it needed a truly stable particle. Something it could use as the basis for building everything else.<br /><br /> Something that never decayed. Something that was forever.<br /><br /> And boy did it succeed. The estimated half life of the proton is 10^32 years. That's way, way, way longer than the age of the universe.<br /><br /> We know the proton has complex inner structure. And the CERN LHC is investigating.<br /><br /> But stable? Yes. It's way over-engineered.<br /><br /> </font> Content written and posted by Ken Abbott <a style="text-decoration:underline" href="mailto:abbottsystems@gmail.com">abbottsystems@gmail.com</a><br><br>Unknownnoreply@blogger.comtag:blogger.com,1999:blog-8920795989760428389.post-35801153847057103782020-01-23T05:55:00.000-08:002020-01-23T05:55:06.265-08:00Learn Algebra in 5 Minutes<font size="4"> <b>Learn Algebra in 5 Minutes</b><br /><br /> Consider this problem, "what number, when added to 5, gives the result 20". <br /><br /> Instead of a sentence, this problem can be written much shorter and clearer as an equation, like this.. <br /><br /> 5+x=20 <br /><br /> where x denotes the number we are trying to find. <br /><br /> Of course, we could also write it as x+5=20 and this is exactly the same equation. Or we could write 20=x+5 which is of course the same thing.<br /><br /> If we manage to find x we say that we've "solved" the equation. Can we solve this equation? Well, we could guess a few numbers for x and try them out. Does x=9 work? Let's see, 5+9=14, so x=9 is not a solution. After a few tries we get the solution, which is x=15.<br /><br /> Guessing a solution is perfectly fine, but it's very time consuming, especially for more complex equations. Of course, we could program a high speed computer to guess solutions and try them out ultra fast until we finally hit on the right solution. And for some very tough equations this is indeed the method used. But this method has one huge flaw.. if it fails to find a solution it does not mean the equation has no solution. That's because even the fastest computer can only make a limited number of tries.. and the actual solution may be something we never get around to trying.<br /><br /> So, coming back to our equation 5+x=20 we should ask if there is a foolproof method that's guaranteed to find the solution. The answer is yes, and it's all about the = sign. Once you truly understand this simple sign solving the equation is easy. <br /><br /> So what does this sign really mean? It means the "object" on the left of the sign is the same exact object as that on the right. They are the same thing.. exactly the same thing. They are the same exact mathematical object but just written in different ways. So there's really only one object!<br /><br /> OK, so our equation says that 5+x is exactly the same object as 20. So, if I do something to 5+x and then I do the same thing to 20 the results will still be equal. Cool. So lets subtract 5 from 5+x to get the result x. Now do the same exact thing to the other side, I'll subtract 5 from 20 to get the result 15. But these two results must be the same, so I can write them as equal to each other, that is x=15. <br /><br /> Bingo, we've solved the equation without any guessing!<br /><br /> Also, I'm not sure if you noticed this, but we just did some basic algebra. Don't let algebra intimidate you, it's just the art of manipulating equations until you get what you want!<br /><br /> Let's look at a slightly more complicated example..<br /><br /> 3*x+2=17<br /><br /> Let's use the same method. First subtract 2 from both sides..<br /><br /> 3*x=17-2=15<br /><br /> Now divide both sides by 3..<br /><br /> x=15/3=5<br /><br /> And that's the solution!<br /><br /> Here's another method I use. It's exactly the same technique as above, but it's faster and easier to handle. Or at least I think so, and I've used it over the years to do massive amounts of algebra!<br /><br /> First move the 2 over to the other side. It was adding, so when it moves over it subtracts, like this..<br /><br /> 3*x=17-2=15<br /><br /> Now move the 3 over. It was multiplying, so when it moves over it divides, like this..<br /><br /> x=15/3=5<br /><br /> This technique is quite general and can be used for any equation. But notice that the order in which you do things is important. For example, you need to get the 2 over to the other side before you can handle the 3.<br /><br /> </font> Content written and posted by Ken Abbott <a style="text-decoration:underline" href="mailto:abbottsystems@gmail.com">abbottsystems@gmail.com</a><br><br>Unknownnoreply@blogger.comtag:blogger.com,1999:blog-8920795989760428389.post-68400598705126546702020-01-18T09:27:00.002-08:002020-01-28T08:20:46.928-08:00Contactless Cards change the way you pay<font size="4"> <b>Contactless Cards change the way you pay</b><br /><br /> <div class="separator" style="clear: both; text-align: center;"><a href="https://2.bp.blogspot.com/-wf8-wm_cGRo/XiNNZOTFovI/AAAAAAAAJv4/qG5awvc4kmAqfmPB5gJ8hiPcVFancdhAACLcBGAsYHQ/s1600/nfc-logo.png" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" src="https://2.bp.blogspot.com/-wf8-wm_cGRo/XiNNZOTFovI/AAAAAAAAJv4/qG5awvc4kmAqfmPB5gJ8hiPcVFancdhAACLcBGAsYHQ/s200/nfc-logo.png" width="200" height="200" data-original-width="159" data-original-height="159" /></a></div> If your credit/debit card has the NFC symbol then it's a contactless card. <br /><br /> So you can just tap to pay. No swiping. No inserting in a chip reader. Just tap and go. It's super fast. <br /><br /> Of course, the merchant needs an NFC reader. Many do but they don't advertise the fact. <br /><br /> For example, I tapped to pay for a croissant at a bakery in NYC and then for my medications at CVS.<br><br> Oh.. I almost forgot. NFC is Near Field Communication. It's a communication protocol with a range of just a few inches. Perfect for tap and pay.<br><br> <b><a style="text-decoration:underline" target="_blank" href="https://www.amazon.com/?&_encoding=UTF8&tag=abbottsystems-20&linkCode=ur2&linkId=601edc436e035803fc11563a6b43a148&camp=1789&creative=9325">Amazon</a><img src="//ir-na.amazon-adsystem.com/e/ir?t=abbottsystems-20&l=ur2&o=1" width="1" height="1" border="0" alt="" style="border:none !important; margin:0px !important;" /> </b> Shop Now!<br><br> </font> Content written and posted by Ken Abbott <a style="text-decoration:underline" href="mailto:abbottsystems@gmail.com">abbottsystems@gmail.com</a><br>Disclosure: As an Amazon Affiliate I earn a small commission when people click on the above link and buy something.<br /><br> Unknownnoreply@blogger.comtag:blogger.com,1999:blog-8920795989760428389.post-23714050352849118942020-01-14T10:27:00.002-08:002020-01-16T11:09:08.947-08:00A Wind Turbine for your Home<font size="4"> <b>A Wind Turbine for your Home</b><br /><br /> First there are commercial wind turbines. These are giant machines, the things you see rotating in the distance on hillsides. <br><br> Vestas has a worldwide installed wind turbine capacity of about 590GW. Siemens has about 100GW of wind turbine capacity in operation. GE rounds out the top three manufacturers with a total installed capacity of 62GW. <br><br> A GW (gigawatt) is a billion watts. It's enough to power about 725,000 homes. <br><br> <b>But what about a wind turbine for your home?</b><br><br> No problem, try a VAWT (vertical axis wind turbine). These things are around 2 feet in diameter and several feet high. Their capacity ranges from 100 watts to about 5 KW. And prices start at just a few hundred dollars.<br><br> Could one of these power your entire house? No, but it could help. The average house needs about 5KW. So if one doesn't do it buy two or three. The wind is free and it doesn't care how many VAWTs you deploy. <br><br> And unlike the sun, the wind is in action overnight. So just connect your VAWT to a high-tech storage battery. Then you have free wind energy even when the wind doesn't blow!<br><br> <b><a style="text-decoration:underline" target="_blank" href="https://www.amazon.com/?&_encoding=UTF8&tag=abbottsystems-20&linkCode=ur2&linkId=601edc436e035803fc11563a6b43a148&camp=1789&creative=9325">Amazon</a><img src="//ir-na.amazon-adsystem.com/e/ir?t=abbottsystems-20&l=ur2&o=1" width="1" height="1" border="0" alt="" style="border:none !important; margin:0px !important;" /> </b> Shop Now!<br><br> </font> Content written and posted by Ken Abbott <a style="text-decoration:underline" href="mailto:abbottsystems@gmail.com">abbottsystems@gmail.com</a><br>Disclosure: As an Amazon Affiliate I earn a small commission when people click on the above links and buy something.<br /><br> Unknownnoreply@blogger.comtag:blogger.com,1999:blog-8920795989760428389.post-28383367612871571192020-01-14T09:03:00.002-08:002020-01-14T09:03:17.592-08:00Prime Numbers Explained a Different Way <font size="4"> <b>Prime Numbers Explained a Different Way</b><br><br> Let's consider the positive integers greater than 1, that is 2,3,4,5,.. <br><br> Suppose we are given the first integer and asked to make all other integers using only the multiply operation.<br><br> We soon run into problems because 2*2=4 and we have no way to make 3.<br><br> OK, we just add 3 to our set of given numbers g, so now g={2,3}<br><br> Can we make 4? Yes, 2*2=4<br><br> Can we make 5? No, all our tries fail, so we add 5 to our set of given number g={2,3,5}<br><br> Can we make 6? Yes, 2*3=6<br><br> Can we make 7? No, all our tries fail, so we add 7 to our given numbers g={2,3,5,7}<br><br> Can we make 8? Yes, 2*2*2=8<br><br> Can we make 9? Yes, 3*3=9<br><br> Can we make 10? Yes, 2*5=10<br><br> Can we make 11? No, so we add it to the set g={2,3,5,7,11}<br><br> Can we make 12? Yes, 2*2*3=12<br><br> Can we make 13? No, so add it to the set g={2,3,5,7,11,13}<br><br> Can we make 14? Yes, 2*7=14<br><br> Can we make 15? Yes, 3*5=15<br><br> Can we make 16? Yes, 2*2*2*2=16<br><br> What is the set g that we are generating by this process? It's the set of prime numbers! This is simply another way to explain prime numbers. <br><br> It's a nice demonstration because it shows how prime numbers generate all numbers using only the multiply operation. You can also see that as g gets bigger we can obviously make more numbers from it, so prime numbers become less and less frequent. <br><br> </font> Content written and posted by Ken Abbott <a style="text-decoration:underline" href="mailto:abbottsystems@gmail.com">abbottsystems@gmail.com</a><br><br>Unknownnoreply@blogger.comtag:blogger.com,1999:blog-8920795989760428389.post-34884469768050461592020-01-11T08:22:00.002-08:002020-01-11T08:26:24.603-08:00Australian Fires - The Terrible Numbers<font size="4"> <b>Australian Fires - The Terrible Numbers</b><br /><br /> One billion animals burned. <br><br> Fires are top of the news again today, and finally they are mentioning wildlife. Why is the government not setting up animal rescue centers? Much of the wildlife is unique to Australia. The government should be setting up major centers to preserve species. There seems to be no plan. <br><br> Don't fight the fires, that's a totally lost cause, save the wildlife.<br><br> </font> Content written and posted by Ken Abbott <a style="text-decoration:underline" href="mailto:abbottsystems@gmail.com">abbottsystems@gmail.com</a><br> Unknownnoreply@blogger.comtag:blogger.com,1999:blog-8920795989760428389.post-29397868829617796942020-01-07T10:18:00.000-08:002020-01-23T06:04:06.695-08:00Wind Turbines - From Hillside to Home<font size="4"> <b>Wind Turbines - From Hillside to Home</b><br /><br /> Vestas has a worldwide installed wind turbine capacity of about 590GW.<br><br> Siemens has about 100GW of wind turbine capacity in operation. <br><br> GE rounds out the top three manufacturers with a total installed capacity of 62GW. <br><br> A GW (gigawatt) is a billion watts. It's enough to power about 725,000 homes. <br><br> These are giant machines, the things you see rotating in the distance on hillsides. What if you want something for your home?<br><br> No problem, try a VAWT (vertical axis wind turbine). These things are around 2 feet in diameter and several feet high. Their capacity ranges from 100 watts to about 5 KW. And prices start at just a few hundred dollars.<br><br> Could one of these power your entire house? No, but it could help. The average house needs about 5KW. So if one doesn't do it buy two or three. The wind is free and it doesn't care how many VAWTs you deploy. <br><br> And unlike the sun, the wind is in action overnight. So just connect your VAWT to a high-tech storage battery. Then you have free wind energy even when the wind doesn't blow!<br><br> </font> Content written and posted by Ken Abbott <a style="text-decoration:underline" href="mailto:abbottsystems@gmail.com">abbottsystems@gmail.com</a><br> Unknownnoreply@blogger.comtag:blogger.com,1999:blog-8920795989760428389.post-19169142712111199412020-01-05T06:53:00.004-08:002020-01-07T05:31:41.262-08:00The Math of Building Wealth<font size="4"> <b>The Math of Building Wealth</b><br /><br /> A friend of mine is an expert on advanced life insurance policies as a method of building wealth.<br /><br /> I was a bit skeptical so I asked him for numbers based on investing just $1,000 a month starting at age 25.<br /><br /> Here's what he said..<br /><br /> "Starting at age 25, if you were to deposit $1,000 every month, you would start immediately with a $1,060,000 death benefit, and at age 65 you would have roughly $1,200,000 in cash. Your death benefit would have grown to roughly $2,400,000 and you would no longer be required to pay premiums. The policy would continue to grow for the rest of your life, both in cash and death benefit, and with tax benefits."<br /><br /> If you need more details just email Les Himel at <a style="text-decoration:underline" href="mailto:lnhimel@gmail.com">lnhimel@gmail.com</a><br><br> </font> Content written and posted by Ken Abbott <a style="text-decoration:underline" href="mailto:abbottsystems@gmail.com">abbottsystems@gmail.com</a><br><br> Unknownnoreply@blogger.comtag:blogger.com,1999:blog-8920795989760428389.post-88665114887636899122020-01-04T07:42:00.000-08:002020-01-05T06:05:29.223-08:00The Problem with 2020<font size="4"> <b>The Problem with 2020</b><br /><br /> No, not the year itself, but how you write the year on important documents such as checks, invoices and contracts.<br><br> The year 2020 provides scam artists a unique opportunity to forge documents. How?<br /><br /> For example, if you write a check and date it 1/3/20 a scammer could easily change the date to 2017 and then try to cash it as an "old" check. Or a scammer could make an invoice look "old" and unpaid. <br /><br /> The solution is easy. Write the year in full 2020.<br /><br /> Personally I think the year 1/1/2020 - 12/31/2020 will be a great year. But the year 1/1/20 - 12/31/20 not so much.<br /><br /> Oh, and a quick note for my international readers. I'm writing dates in "American", that's month/day/year and not the day/month/year that you use. But the scam avoidance is still the same!<br /><br /> </font> Content written and posted by Ken Abbott <a style="text-decoration:underline" href="mailto:abbottsystems@gmail.com">abbottsystems@gmail.com</a><br><br>Unknownnoreply@blogger.comtag:blogger.com,1999:blog-8920795989760428389.post-3333342043320919382019-12-27T08:01:00.001-08:002019-12-27T08:01:37.149-08:00Physics and the Vacuum<font size="4"> <b>Physics and the Vacuum</b><br /><br /> We live in a causal universe - meaning there’s a maximum finite speed for causality. It’s a fundamental constant of the universe and it’s the same for all observers. It’s by no means obvious that light should travel at this speed. But it does.<br><br> The actual value for the speed of causality is determined by the structure of the “vacuum”. The thing we call the vacuum is complex, with lots happening deep down at the quantum level. Plowing through it is hard work, even for light and gravity waves. And far harder for matter particles.<br><br> </font> Content written and posted by Ken Abbott <a style="text-decoration:underline" href="mailto:abbottsystems@gmail.com">abbottsystems@gmail.com</a><br><br>Unknownnoreply@blogger.comtag:blogger.com,1999:blog-8920795989760428389.post-21252450309651625662019-12-12T13:12:00.001-08:002019-12-20T05:57:07.359-08:00Boeing 737 Max Saga<font size="4"> <b>Boeing 737 Max Saga</b><br /><br /> Here's my explanation of this terrible tale.<br><br> MCAS is a software patch in the 737 Max flight control computer that tries to compensate for a dangerous aerodynamic instability. The instability came about due to engine choice. <br><br> Boeing used the LEAP-1B engine on the 737 Max. It's a huge diameter bypass engine and it pushed the center of gravity of the aircraft into strange territory. <br><br> Hence the aerodynamic instability. Hence the MCAS software which put pilots into a terrible situation trying figure out what was happening. <br><br> In two cases they could not, and the planes oscillated under MCAS control until they fell out of the sky.<br><br> Many people died.<br><br> Only then was the decision made to ground the plane.<br><br> </font> Content written and posted by Ken Abbott <a style="text-decoration:underline" href="mailto:abbottsystems@gmail.com">abbottsystems@gmail.com</a><br><br>Unknownnoreply@blogger.comtag:blogger.com,1999:blog-8920795989760428389.post-63223876805578710142019-10-26T09:53:00.003-07:002019-10-26T09:53:28.193-07:00Climate Change and Sea Level<font size="4"> <b>Climate Change and Sea Level</b><br /><br /> The Greenland ice sheet is massive. If it melted sea levels would rise about 23 feet. <br><br> But the Antarctic ice sheet is way bigger. If that sheet melted sea levels would rise about 200 feet and wipe out almost every major city on earth.<br><br> </font> Content written and posted by Ken Abbott <a style="text-decoration:underline" href="mailto:abbottsystems@gmail.com">abbottsystems@gmail.com</a><br><br>Unknownnoreply@blogger.comtag:blogger.com,1999:blog-8920795989760428389.post-26771508321848968962019-10-23T12:38:00.002-07:002019-10-23T12:45:13.435-07:00Twin Primes Observation<font size="4"> <b>Twin Primes Observation</b><br /><br /> About the distribution of Twin Primes. <br><br> Let p1 be the first prime of a twin prime pair and let p2 be the first prime of the next consecutive twin prime pair. Then, I'm quite surprised how small p2-p1 stays. And when it does increase it will suddenly drop back to a very small number such as 12. <br><br> Anybody have any input on this?<br><br> </font> Content written and posted by Ken Abbott <a style="text-decoration:underline" href="mailto:abbottsystems@gmail.com">abbottsystems@gmail.com</a><br><br>Unknownnoreply@blogger.comtag:blogger.com,1999:blog-8920795989760428389.post-6965469930342295592019-10-23T07:13:00.002-07:002019-10-24T08:43:08.068-07:00Einstein's Amazing Luck<font size="4"> <b>Einstein's Amazing Luck</b><br /><br /> Was it amazing luck or was it amazing insight? Whichever it was, at some point Einstein realized..<br><br> At a given point in space it’s impossible to distinguish between the effects of gravity and the effects of acceleration. <br><br> So, when he was trying to generalize Special Relativity to accelerating frames of reference he got an incredible bonus.. gravity suddenly appeared.. and General Relativity became a theory of gravity.<br><br> The rest is history.<br><br> </font> Content written and posted by Ken Abbott <a style="text-decoration:underline" href="mailto:abbottsystems@gmail.com">abbottsystems@gmail.com</a><br><br>Unknownnoreply@blogger.comtag:blogger.com,1999:blog-8920795989760428389.post-52682413665079859902019-10-22T09:17:00.003-07:002019-12-26T13:56:58.678-08:00Simple and Powerful Diet Secret<font size="4"> <b>Simple and Powerful Diet Secret</b><br /><br /> Read the nutritional label on the package. Or Google the food to read its nutritional label online. Just Google "nutritional label for xxx" where xxx is the name of the food, examples: beans, steak, donuts etc.<br><br> Then.. <br><br> Don't worry too much about calories!<br>Look for high protein. The higher the better.<br>Look for high fiber. The higher the better.<br>Look for low sugar. The lower the better. Zero if possible.<br>Look for low saturated fat. The lower the better. Zero if possible.<br> Simple.<br><br> </font> Content written and posted by Ken Abbott <a style="text-decoration:underline" href="mailto:abbottsystems@gmail.com">abbottsystems@gmail.com</a><br><br>Unknownnoreply@blogger.comtag:blogger.com,1999:blog-8920795989760428389.post-20167659063204689262019-10-17T09:06:00.002-07:002020-01-29T06:05:08.628-08:00My Favorite Amazon Deals<font size="4"> <b>My Favorite Amazon Deals</b><br /><br /> Here are a few of my favorite Amazon deals..<br><br> <b>AMAZON Business Account</b> - Quantity discounts and more. <br><b>CELL PHONES</b> - Huge Savings & Huge Selection. <br><b>AMAZON Echo</b> - The amazing Alexa voice interface. <br><b>AMAZON Echo Studio</b> - Echo for music lovers. <br><br> <b><a style="text-decoration:underline" target="_blank" href="https://www.amazon.com/?&_encoding=UTF8&tag=abbottsystems-20&linkCode=ur2&linkId=601edc436e035803fc11563a6b43a148&camp=1789&creative=9325">Amazon</a><img src="//ir-na.amazon-adsystem.com/e/ir?t=abbottsystems-20&l=ur2&o=1" width="1" height="1" border="0" alt="" style="border:none !important; margin:0px !important;" /> </b> Shop Now!<br><br> </font> Content written and posted by Ken Abbott <a style="text-decoration:underline" href="mailto:abbottsystems@gmail.com">abbottsystems@gmail.com</a><br>Disclosure: As an Amazon Affiliate I earn a small commission when people click on the above link and buy something.<br /><br>Unknownnoreply@blogger.comtag:blogger.com,1999:blog-8920795989760428389.post-22499521552694051342019-10-14T07:59:00.003-07:002019-10-14T08:02:29.333-07:00CERN LHC Explained<font size="4"> <b>CERN LHC Explained</b><br /><br /> How did the CERN LHC (Large Hadron Collider) get its name? <br /><br /> Well, it's a large machine, about 27 kilometers in circumference and it collides protons. So it's a large collider. But what about the Hadron in the name? It turns out the proton belongs to a class of particles called Hadrons. The Proton is a Hadron. So we have a Large Hadron Collider.<br /><br /> Why collide protons anyway?<br /><br /> The LHC accelerates two counter-rotating beams of protons. The beam pipes are about 27 kilometers in circumference, and the protons are steered around the machine by powerful superconducting magnets. The two beams intersect at 4 points and this is where the protons collide head-on. The "debris" from the collision is measured to learn about the internal structure of the proton. <br /><br /> It turns out the proton is a complex object. Current theories describe it as composed of three quarks bound together by an incredibly strong force field mediated by particles called gluons. <br /><br /> So colliding protons may result in their constituent quarks colliding and yielding information about quarks. The gluons could also collide and yield more information about the force field within the proton.<br /><br /> The LHC is currently shut down for a major upgrade. But when it's operating this dashboard lets you see the LHC machine status in realtime. Check machine energy, ramps, beam status, machine tests, detector status and more. Plus, see messages from machine operators.<br /><br /> <b><a style="text-decoration:underline" href="http://op-webtools.web.cern.ch/op-webtools/vistar/vistars.php?usr=LHC1">Watch LHC operations in realtime</a></b><br /><br /> It doesn't matter if you're a physicist or simply an interested consumer.. the mystery of the proton is this.. why does nature pack such amazing complexity into such an incredibly small object?<br /><br /> <b>Some interesting LHC stats:</b><br /><br /> Proton are bunched in the LHC beam pipes.<br />There are 2808 bunches in each beam pipe.<br />Each bunch is about 30 cm long and contains approx 10^11 protons.<br />After full acceleration the protons are traveling at 0.999999991 the speed of light.<br /><br /> </font> Content written and posted by Ken Abbott <a style="text-decoration:underline" href="mailto:abbottsystems@gmail.com">abbottsystems@gmail.com</a><br><br>Unknownnoreply@blogger.comtag:blogger.com,1999:blog-8920795989760428389.post-19447572332884953422019-10-11T13:03:00.003-07:002020-01-28T08:31:13.750-08:00Amazon Echo and the Elderly<font size="4"> <b>Amazon Echo and the Elderly</b><br><br> My mother-in-law is 94 and she lives alone. Obviously there is much she cannot do. But I setup Amazon Echo for her. And she uses it constantly for..<br><br> -The weather<br>-The time<br>-Switching lights on and off (and dimming them)<br>-Switching the TV on and off (and changing volume)<br>-Placing phone calls<br>-Playing her favorite music<br>-Getting flight status information<br><br> Amazon Echo is an amazing tool for the elderly. I wish this got more publicity.<br><br> TIP: If you're a music lover get the version of the Echo with high fidelity speakers. <br><br> </font> Content written and posted by Ken Abbott <a style="text-decoration:underline" href="mailto:abbottsystems@gmail.com">abbottsystems@gmail.com</a><br><br>Unknownnoreply@blogger.comtag:blogger.com,1999:blog-8920795989760428389.post-55566410724993521332019-10-09T13:47:00.000-07:002019-11-29T17:07:36.813-08:00Speed of Light<font size="4"> <b>Speed of Light</b><br><br> If you believe we live in a causal universe then there must be an upper (finite) limit on the speed of causality. Otherwise the universe would not be causal. <br><br>It is by no means obvious that this speed also equals the speed of light. But apparently it does.<br><br> </font> Content written and posted by Ken Abbott <a style="text-decoration:underline" href="mailto:abbottsystems@gmail.com">abbottsystems@gmail.com</a><br><br>Unknownnoreply@blogger.comtag:blogger.com,1999:blog-8920795989760428389.post-31431727952318344562019-09-19T07:06:00.000-07:002019-09-30T05:37:47.092-07:00Plot Functions with Google Search<font size="4"> <b>Plot Functions with Google Search</b><br><br> The Google Plot Function is powerful, fast and free. It's a great way to teach yourself functions, or to make math homework easier.<br><br> To plot a function just type your request into Google. The format of the request is plot {function}, for example..<br><br> To plot the function f(x)=x^3 just enter plot x^3 into Google. <br><br> Of course, it can handle more complex functions, for example try entering plot 1/(1+x^2)<br><br> Notice the symbols used by the Google Plot function: x^n means raise x to the power n and * is used to denote multiplication.<br><br> </font> Content written and posted by Ken Abbott <a style="text-decoration:underline" href="mailto:abbottsystems@gmail.com">abbottsystems@gmail.com</a><br><br>Unknownnoreply@blogger.com