discovermagazine.com— The first light in the universe, the light used to push spacecraft, and the light produced by kicking the head of a walrus.
Apr 14, 2010View in Crawl 4
Can someone explain to me #14?"Visible light makes up less than one ten-billionth of the electromagnetic spectrum, which stretches from radio waves to gamma rays."I understand wavelength of gamma rays can't be shorter than Plank's length, but I was under the impression that there is no upper limit to the wavelength of radio waves. So how visible light be 1 ten-billionth of the spectrum when the spectrum goes on to infinity?
"22. If a you were moving at the speed of light and turned on a flashlight, the light coming from the flashlight would still only move at its maximum speed, not its maximum speed + the speed at which you're moving."So the light would look like it was floating or not moving because you and the light would be moving at the same speed.hmmm
Re ceolas.net siteThanks gasolineI was wondering where the page count rise came from ;-)I am in the process of setting up a blog (link will be on the site next month)The blog will link to North American and other politicians/media articles criticising the efficiency regulations on light bulbs, to try and unify the cause against them.
"15 Goldfish can see infrared radiation that is invisible to us. Bees, birds, and lizards have eyes that pick up ultraviolet."I'm sorry but who was the person who decided one day they'd take a look through the eyes of a goldfish?
killozapApr 14, 2010
Can someone explain to me #14?"Visible light makes up less than one ten-billionth of the electromagnetic spectrum, which stretches from radio waves to gamma rays."I understand wavelength of gamma rays can't be shorter than Plank's length, but I was under the impression that there is no upper limit to the wavelength of radio waves. So how visible light be 1 ten-billionth of the spectrum when the spectrum goes on to infinity?
mrfunstuffApr 15, 2010
"22. If a you were moving at the speed of light and turned on a flashlight, the light coming from the flashlight would still only move at its maximum speed, not its maximum speed + the speed at which you're moving."So the light would look like it was floating or not moving because you and the light would be moving at the same speed.hmmm
thatinternetguyApr 15, 2010
Just kick the crap out of them, I'll get to see light. Don't go there.
addictedtomoshApr 15, 2010
The rate at which the moon is moving away from us is not an important constant.
lhbakerApr 15, 2010
Diamonds hate us for our freedom.
piieerrrreeApr 15, 2010
or in this case<a class="user" href="http://www.youtube.com/watch?v=yH8yuld4DUE" rel="nofollow">http://www.youtube.com/watch?v=yH8yuld4DUE</a>
crazedleperApr 15, 2010
Ouch, that was pointy. Nicely done--yours originally? Mind if I use it?
lighthouse10Apr 20, 2010
Re ceolas.net siteThanks gasolineI was wondering where the page count rise came from ;-)I am in the process of setting up a blog (link will be on the site next month)The blog will link to North American and other politicians/media articles criticising the efficiency regulations on light bulbs, to try and unify the cause against them.
link470Jun 10, 2010
"15 Goldfish can see infrared radiation that is invisible to us. Bees, birds, and lizards have eyes that pick up ultraviolet."I'm sorry but who was the person who decided one day they'd take a look through the eyes of a goldfish?