|
wootaba (August 15, 2008 at 12:47 pm)
fail...
myspeedtube (August 15, 2008 at 5:01 am)
^
|
Great tool for watching lectures on youtube, speed up and save time. Click my profile for link to download MySpeed Plug-In for YouTube and Speed up or Slow down any YouTube Video. Watch a 60 minute lecture in just 30 minutes and understand everything.
barrosTV (August 14, 2008 at 11:22 pm)
Nice lecture, entertaining. Just for clarity: the comments right after min 20 are a bit outdated. Microscopes can now distinguish down to 0.3um with visible light, AND other microscopes like Electron or Atomic Force Microscopes can distinguish at atomic scale. So we can look at atoms, not the "electron cloud" though. Perhaps this seems nerdy, but well I believe that in Science we gotta keep an eye on details too. Go physics!
sspoke (August 13, 2008 at 1:51 am)
So your saying light is just a connection string which atoms give off when they cause a chain reaction of heat pattern? Try to put it in basic works.. I like understanding everything at the LEAST basic it could get.. and thats how I understand every law of universe.
I don't like hearing words like quantumms and goolguns and useless words like that.. the word atom was made atom for a reason 4 letters.. easy to access no stress on the mind. When you learn alot of information you get strain.
tramwell (August 12, 2008 at 9:20 pm)
Light is not transmitted via atoms, light quantuums traversing the universe does NOT require any travelling atoms.
Considering sound waves, again atoms are not travelling anywhere too far, they just vibrate covering a distance comparable to the wave length of the sound.
Finally with constant energy you can of course accelerate a smaller body to a higher speed than a heavier one, but atoms of some cold gas might move slower than some celestial bodies. :) Peace.
EliteSn1p3r (August 12, 2008 at 3:23 am)
your smell is like an advanced form of taste, the smell of something is given off by the same chemicals that give it taste. But apparently i read somewhere only a very very small concentration of oders are in the air in comparison too how much taste is in food. And that you can only distinguishe about 5 different types of tastes, but like 150 different types of smells. If you want to learn about it look it up..
EliteSn1p3r (August 12, 2008 at 3:18 am)
oh, nevermind, i read you wrong when you said sound moves slower in water.
sspoke (August 12, 2008 at 2:27 am)
ya??? good explanation then? how does the nose work?? I haven't a clue all I know is oder must be a very weak gas atom chain that gets sucked up your nose like a vacuum cleaner and something happens.. maybe its biologically programmed to whatever it smells like based on pattern or maybe you just store it as you learn smells into a brain database or somethings
EliteSn1p3r (August 12, 2008 at 2:24 am)
When you talk, the vocal cords in your mouth vibrate, this transferes energy into the air in a series of rythmatic waves. These waves are a transfer of energy between the atoms, and as the waves move along the air they may eventually meet your ear drums. When the waves hit your ear drums they vibrate them, which sends waves of energy through a fluid in your ear which is then picked up by very fine hairs inside the liquid.
EliteSn1p3r (August 12, 2008 at 2:20 am)
you dont explain very well, and btw sound moves faster in water...not slower. It's easy to figure out how much slower sound is then light btw, it's 0.0000001% (~300,000km/s divided by ~330m/s). Sound doesn't always have a 3-5 second delay, it depends on how much space is between you and the sound generator! It'll have a 3 second delay for approx. each kilometre. Sound is an energy wave basically, it's atoms transferring energy between them as they collide. |