Search found 5 matches

by Anarch
Mon Sep 01, 2008 2:22 am UTC
Forum: Science
Topic: HS chem question: Velocity and wavelength w.r.t. photons
Replies: 30
Views: 5222

Re: HS chem question: Velocity and wavelength w.r.t. photons

It's entirely possible that your teacher meant proton, as has been mentioned... I shall now paraphrase my teacher slightly: "We know that the mass of a photon has to be less than that of an electron, because it's a smaller particle." I'm fairly certain that he isn't thinking about a proto...
by Anarch
Sun Aug 31, 2008 12:02 am UTC
Forum: Science
Topic: HS chem question: Velocity and wavelength w.r.t. photons
Replies: 30
Views: 5222

Re: HS chem question: Velocity and wavelength w.r.t. photons

So my chem teacher went over the problem in detail yesterday, and here was his explanation to the question: Calculate the wavelength of a photon traveling at a velocity of 0.01 c (speed of light). c=3.0 x 10 8 m/s. a. 3.4 x 10 -55 m b. 1.3 x 10 -15 m c. 1.9 x 10 -28 m d. 1.9 x 10 -28 m (Yes, this is...
by Anarch
Wed Aug 27, 2008 10:17 am UTC
Forum: Science
Topic: HS chem question: Velocity and wavelength w.r.t. photons
Replies: 30
Views: 5222

Re: HS chem question: Velocity and wavelength w.r.t. photons

Um, this question makes no sense. Photons can't travel at 0.01c, and even if they could, it's just like you say -- the speed of a photon is independent of its wavelength. Remember, photons have no mass either, so E=mc^2 doesn't apply. Photon energy is proportional to wavelength; speed (in vacuum) i...
by Anarch
Wed Aug 27, 2008 2:29 am UTC
Forum: Science
Topic: HS chem question: Velocity and wavelength w.r.t. photons
Replies: 30
Views: 5222

HS chem question: Velocity and wavelength w.r.t. photons

This will almost certainly seem like a boneheaded question, and for this I apologize. My chemistry teacher has given us this question: Given a photon traveling at a velocity of 0.01*c, what is the wavelength of this photon? (this is all the given information: the photon's velocity) My chemistry teac...
by Anarch
Wed Jul 09, 2008 10:55 am UTC
Forum: Individual XKCD Comic Threads
Topic: 0447: "Too Old For This Shit"
Replies: 95
Views: 20783

Re: "Too Old For This Shit" Discussion

This comic rings extraordinarily true with me. Back when I was in middle school, I considered myself to be amazing at math, and probably rightly so. I'd ranked fairly well on a few national-scale math competitions (which I do realize are in no way definitive or even moderately useful when it comes t...

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