Posted on 10/01/2005 8:10:18 PM PDT by GummyIII
Correction Appended
DURING the summer of 1905, while fulfilling his duties in the patent office in Bern, Switzerland, Albert Einstein was fiddling with a tantalizing outcome of the special theory of relativity he'd published in June. His new insight, at once simple and startling, led him to wonder whether "the Lord might be laughing ... and leading me around by the nose."
But by September, confident in the result, Einstein wrote a three-page supplement to the June paper, publishing perhaps the most profound afterthought in the history of science. A hundred years ago this month, the final equation of his short article gave the world E = mc².
In the century since, E = mc² has become the most recognized icon of the modern scientific era. Yet for all its symbolic worth, the equation's intimate presence in everyday life goes largely unnoticed. There is nothing you can do, not a move you can make, not a thought you can have, that doesn't tap directly into E = mc². Einstein's equation is constantly at work, providing an unseen hand that shapes the world into its familiar form. It's an equation that tells of matter, energy and a remarkable bridge between them.
(Excerpt) Read more at nytimes.com ...
Sounds reasonable.
My hair is a very effective humidity barometer. Individual strands make perfect coils.
Why do some of them twist clockwise and some counter clockwise?
Even chemical reactions invoke E = mc2
http://www.newton.dep.anl.gov/askasci/chem03/chem03534.htm
http://johnquiggin.com/index.php/archives/2005/10/01/really/ <- better one
Time is dimension. The meaning of that dimension is "is", or "exists". What exists is energy and exists in this world with an uncertainty within E~=t/Hbar. It's never an illusion, or appears to be so in the local frame. Einstien cleared up any misunderstanding that existed before that.
increasing the the kinetic E of anything, increases it's mass. Unless the speed is hugh, that extra mass is ignored.
The curl comes, because the cross section of each hair is D shaped more. The handedness of the curl comes from the direction the D points to at it's base, where it's planted.
Thank you.
Didn't know I had D shaped hairs. Knew they were very coarse and very red.
Yes, to both questions. As with your ordinary chem though, the E and m change is too small to be significant.
The total mass is given by,
m = m0/sqrt(1-v2/c2)
m0 is the rest mass. You can see that if v is small the changes don't mean much.
I love this stuff too, though I'm in no way qualified to be involved in any of these threads. lol I threw my two cents into this thread, cuz things like this help me to knock some of the rust off of my old brain.
I've been trying to wrap my brain around William Tell's latest two responses to me. I was about half way down post 56, writing a response to it as I went & got to a point where I've started to think I was seeing everything wackbards. I figured it would be good to start over & by this point I have a bunch of windows open, with different responses written in each, including one response that's kinda multiple choice. ROTFL
However, I am more a mathematics nerd. Can't wait for that thread to come along.
If you find something worthwhile posted, think you could remember to ping me? Trust me, I'm a glutton for punishment. :o)
Of course I'll ping you if I find a math thread. I hope you do the same for me. That's cute about being involved in more than one thread and losing all of it wackbards. I was accused of jumping around as if I had attention deficit disorder. Never was accused of that as a child. I was quiet and shy. Maybe ADHD is just in the brain of some people and they are not hyperactive. Or maybe some of us think so fast, it is hard for others to keep up. LOL
Yes, I often get terms confused myself, there are so many in physics. Then I often get ahead of myself : brain thinks much faster than one can write. Ok then, have you got an answer to t=dKE? Or, can you demonstrate a time event that is not a kinetic energy event? $1000 quick cash if you can(small, unmarked bills in a brown paper bag, out in the alley, furtive glances all around...). W=P
I typed "nucleotides" when thinking "neutrons" once. Then there was the time I typed "Romania is landlocked."
I never learned anything about D shaped hair. I was told that curly hair was oval shaped, as was the papilla where the hair is produced. The more elongated the oval, the curlier the hair.
Never studied hair in any depth.
I mostly have fought a loosing battle against the elements.
It gets wider and shorter depending on the humidity.
Having responses going to a bunch of different threads is my usual MO, but not this time. Heck, half of the time they wind up on some notebook file & never get posted. I currently have to share my computer with one of my sons, which increases the number of my never completed responses to things. But hey, some day I might go back, dig through all of my notebook files, finish what I was gonna say & then post them all. LOL
Now picture this, I have several responses to the same single post going.
I almost feel like a little kid again, pawing through a box of tangled transistors to find the ones with the color stripes he's looking for. He was so patient with my silly questions.
I was accused of jumping around as if I had attention deficit disorder. Never was accused of that as a child. I was quiet and shy. Maybe ADHD is just in the brain of some people and they are not hyperactive. Or maybe some of us think so fast, it is hard for others to keep up. LOL
I have ADD, not ADHD, but back in the day, they just called it disorganized and/or scatterbrained.
The oval shape is symmetric. There is no reason for curl to occur, because any particular direction out from the center of the hair is the mirror image. An oval may be easier to curl artificially, but natural curl requires asymmetry.
Ooops, I threw a strange shortcut into my previous response to you, which means I left something out as I did an edit down from all of the stuff I wrote. The "he" I was talking about was my older brother. When we were kids, he was always building something, playing with his wires & he'd put me to work finding parts, which I loved to do, cuz he'd put up with my clueless questions.
Picture a bunch of flat ovals stacked on each other, with a slight offset.
I think maybe you just think so fast and teachers couldn't keep up. I do need structure in my life, though, many people do. Otherwise the universe seems just too vast! Some of us need to order our universe.That might be considered scatterbrain if it is unstructured. I learned that from my oldest son, when he was very young. A wise preschool teacher had that insight about him. Suprising what we learn from our kids.
I just started with these forems recently, thanks to a very dear friend, whom I love dearly. It's funny that both my teenage sons have been doing this for years already. One was and still is into live interactive role playing. He makes up games on a microsoft blog. He is a very bright and creative guy, so I told him he should not be giving his creative stories away like that to BIG BROTHER MICROSOFT for free. My other son has been into avatars for years, and he actually helped my write a paper for a graduate level class at a very early age: on how "online no one knows you're a dog? I wish I could find that paper, but it is on a crashed harddrive or on a zip disk and my zip drive is broken. LOL
Isn't it hard to follow threads sometimes unless you copy and paste the original into the reply box? Otherwise the response seems disjointed. I just try to write from my heart and see what happens. I thinks Henry? James called it a stream of consciousness.
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