EdEarl

Oh, true. I was just young and gullible.

Oh, wrong that news and editorial are mixed and confuse people? Or, something else? I'm sure I got the Mark Twain quote right.

First you firmly assert one stance (contradicting me) with an added recommendation to neuter the first amendment, then you end by conceding you simply don't know. Sheesh!

Obfuscation is opprobrious.

I thought I had an original thought then. <sulks>

I thought I had an original thought, then learned someone in history beat me to it.

At one time news and editorials were separated and one could rely on the news. Today, one must be vigilant and knowledgeable to distinguish editorial from news. Since people watch the news to learn about current events and attitudes, we have a misinformed public. I'd like to see the FCC levy fines for mixing editorials and news, but corporate controlled congress limits the power of Federal regulators.

Maybe things only seem to have changed, because Mark Twain said:

 

If you don't read the newspaper, you're uninformed. If you read the newspaper, you're mis-informed.

I love chocolate:) There are known unknowns, for example how does space-time compress and expand, is it a continuous field or a mess of quanta acting as an ideal gas--poor. To make any progress on one of these unknowns, one must learn everything there is to know about it, so you don't make obvious mistakes, so your hypothesis fits all that is known, or you know enough to challenge something that has a consensus. Many scientists have already spent years thinking about these things; thus, it would be remarkable if someone here actually makes a contribution.

I'd apply another statistics here.

(quantity of Muslims in the world ) / (quantity of terrorist attacks created by Muslims)=k (quantity of Belgians - Muslims of Belgium) / (quantity of terrorist attacks created by Belgians without Muslims)

during last five years

Do you think k>1 ?

IDK your purpose, but there are about 1.6B Muslims in the world and there have been about 250 terrorist attacks since 2012. I didn't try to characterize the attacks as Muslim or otherwise. Wikipedia says there were about 1M Muslims as of 2011. 1.6B/250=6,400,000

Medusa seems complex compared to a laser and light sail. In addition, Medusa parts that might "wear out" are traveling on the ship, where repairs cannot be made, or additional mass is required for replacement parts and robots to perform repairs. The laser would be near Earth and accessible for repair. The light sail has nothing to wear out. The simple solution is usually preferable. Why add the complexity of Medusa?

I'm confused about your use of progress. You seem to be saying progress is not moral progression, but the two are linked. Either no moral improvements means progress is null, or progress is null means no moral improvements; which one? What do you mean by progress?

They have no home in Belgium. Do you think Belgium is warmer than Greece or Turkey?

I think we would all like the world to be a better place, without war and other atrocities in which men respect each other; it's an improbable or impossible ideal. We often react emotionally and demand an eye for an eye, but as Gandhi said, that would make the whole world blind. Someone must stop the chain reaction. The important warmth is in peoples hearts; it makes no difference whether Greece or Turkey is warmer than Belgium.

You want to protect yourself, which is natural. You cannot solve the world's problems. You might be able to make you, your family, friends and country men safer by excluding foreigners. However, excluding everyone would create unintended and unforeseeable consequences; others in this thread have mentioned some consequences.

Lets consider another ideal. Suppose Belgium excludes people and creates an ideal society, in which everyone has everything the want, but the outside world deteriorates into chaos. I contend Belgium would be invaded and your countrymen would loose all. Now, consider a more realistic situation, where there is little difference in lifestyles between Belgium and the rest of the world. Someone villain would surreptitiously cross your border and create chaos. In fact, closed borders would inevitably create some kind of black market with villains crossing regularly. I submit that there is no safety in closing borders, it is an illusion.

I need to go play with my grandson now; otherwise, I would continue to try to make a case for being kind and open as our best opportunity for (almost) global peace. bbl

It's just bad. Squaring as L Meow is doing may not be as few multiplications as your method imatfaal, but it seems like a good method to me, and I think the number of digits to write will not change much as Acme said in #13.

 

As long as you can think of it in 3D. It is the 3D nature of the GW I trying comprehend in this thread.

There are animations showing ripples in ponds and others with tubes and others with wavy lines. But I want to develop how to think of the total effect radiating out from the source in a 3D fashion so we can understand how we can detect the wave wherever you are.

Case:

ripples in ponds - you would have to on that surface

and others with tubes - you would have to be in the region

and others with wavy lines - you would have to be on that line.

3D wave - anywhere in space you can detect the GW

Pictures characterize gravity waves somewhat like ripples in ponds because they are 2D trying to represent 3D; thus, misleading. I can't imagine a video that would be authentic, but maybe someone can. It seems we are left to our imagination.

 

It is similar. The difference is that sound waves are changes in compression in the direction of travel (z). While gravitational waves have an effect in x, y and t but not z.

 

Not z! That destroys my notion of how they propagate and seems to violate locality. How can they be so limited?

Space-time being stretched and squeezed is the closest description. (As always, the devil is in the detail of the directions in which these take place.)

 

Nothing to do with Higgs field/bosons which have nothing to do with gravity (other than being a cause of a small part of the mass of matter).

 

We don't currently have a theory of gravitons and gravity.

That sounds like gravity waves traveling through space-time is analogous to sound traveling through air. Space-time is filled with virtual particles; do gravity waves move by compressing and decompressing virtual particles? I suspect the answer is no; although, they would move with space-time.

Light waves are photons traveling through space. Ocean waves move water up and down as the wave moves horizontally, sound waves compress and decompress air or other matter. Are gravity waves the movement of gravitons or Higgs bosons, space-time being compressed and decompressed, Higgs field perturbations, or something else?

 

How did you figure that "9^2500 is a 2386 digit number"?

I used the calculator on my Linux system; the Windows calc would probably do the same.

EdEarl, on 23 Mar 2016 - 06:12 AM, said:

Taste is acquired, not inherent. On the other hand, mental blocks are real.

Real - but again acquired and re-learnable.

 

I have done the self-experiment on blue cheese; I hated stilton and it made me queasy to even smell it. Twelve times I ate it - now I love the stuff. To be honest by the tenth or eleventh time I was converted. Phobias can be treated in exactly the same way. We are really quite simple animals

 

When we stop eating something, our tastes change similarly. Many years ago, I loved cheeseburgers, but heard they might be causal of heart attacks; thus, I stopped eating them. It wasn't immediate, instead of eating them regularly, I did so infrequently. Over years, I ate them less and less, then didn't eat one for several years. Then, I took a bite of one my wife was eating, and I'd lost the taste for cheeseburgers; the fat sat thick and almost tasted rancid. That was more than twenty years ago, and the last time I tasted a cheeseburger. My desire for them is gone.

There are a number of sites that give advice about DNS unlocker and its cohorts, for example: https://malwaretips.com/blogs/ads-by-dns-unlocker-removal/.

Laser beam and light sail. I agree, if a spacecraft carries fuel it cannot be really small.

Sorry, I'm a bit dyslexic and missed that point, and do not think you are stupid.

There are about 16 exoplanets currently known within 100 ly that are similar to Earth. Now, we cannot image any of them well enough to know anything about their atmosphere, if any. There may be more found within that radius. It seems likely that as we learn more about these 16 planets, some will not be suitable. About 50 exoplanets are currently known within 3500 ly that are similar to Earth.

I think 10%c is very ambitious for anything we make, and the larger it is the less likely we can make it go that fast. Our best chance of making a drone that can travel that fast is to keep its mass small, such as a ping pong ball, but afaik no one is working toward it atm. That 10%c is 18,600 miles per second; whereas, our fastest spacecraft has gone 38,600 miles per hour = 11.7 miles per second. It's Voyager going that fast, which was launched in 1977. It seems unlikely we will push anything 10%c within 250 years since we have made virtually no progress toward that goal in 40 years.

I believe you will get little opposition to your supposition from the scientific community; although, there are some, really a few, such as the Amish, who object to modern things. Even they have adopted modernity to a smaller degree than most. On the other hand, many of our conveniences bring a heavy cost, for example the cost of climate change. We have begun to replace fossil fuels with renewables, but many more cleanup projects must be done. Some are one-timers and some will be continual or continuous projects. Installation of renewable power systems to replace fossil fuels is a one time project, but maintenance of renewable technologies is on-going. The ethical and cultural challenges are far more difficult and seem to be blocking our worldwide changes so that everyone has basic necessities, a condition necessary to minimize suffering and abate greed.

81^625 not =81^624 + 81

3³ = 3²*3 not 3²+3

My math is too rusty to help you, sorry. I'm not sure why no one replied to your post, because there are so really good mathematicians on this forum. If you don't get a reply soon, you might try posting your work using LaTeX, See:

http://www.math.harvard.edu/texman/

http://mirrors.ibiblio.org/CTAN/info/symbols/comprehensive/symbols-a4.pdf

http://web.ift.uib.no/Teori/KURS/WRK/TeX/symALL.html

For example: [math]\sqrt{\frac{a^2+b^2}{ab^2}}[/math]

IDK if it is important to you, but I believe it will be impossible to make an exact copy of the information in a brain because of the Heisenberg uncertainty principle. To make a perfect copy would require reproducing all neural circuits and brain waves, which I think would mean knowing the position and velocity of electrons that carry messages in the brain, and that is not possible. Moreover, the brain replica, whether physical hardware or virtual software, cannot be replicated perfectly for similar reasons. One day maybe we will be able to make a reasonable facsimile; it is plausible but not inevitable.

A few hundred years ago mathematicians and physicists had to do this all the time. I imagine Newton doing something similar when he worked out that the motion of the moon fit his theory of gravity.

 

This particular kind of skill, organization, and focus at hand calculation is very rare these days.

Calculators were hired sometimes to perform calculations similar to these. I imagine Babbage was motivated to make his calculating engines by similar requirements.

PS

My wife, a teacher, suggested your teacher may have assigned this project because he/she needed to keep you busy while teaching less gifted students. If you want more challenging work, you might ask your teacher if you can do another project, e.g., perhaps research for science fair, with a report. If 3⁵⁰⁰⁰ was assigned by your math teacher, emphasize the math you will use on the project, or if science teacher emphasize the science. Just a thought, if you find your current assignment too boring.