Sponsor Message:
Non Aviation Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
A Somewhat Urgent Question On Physics: Pulsation  
User currently offlineGAIsweetGAI From Norway, joined Jul 2006, 933 posts, RR: 7
Posted (7 years 4 months 1 week 5 days 7 hours ago) and read 1474 times:

I'm doing the physics Concours Général in physics on Thursday, and in math on Monday. To prepare, I looked at previous years' sujet's (I can't find the translation right now), and some talk of a pulsation, omega, in relation to light, that I don't know anything about.
I asked my teacher today and he couldn't come up with a definite answer.
So do any of you know what pulsation is or represents, and what formulas are associated with it?

Thanks for any constructive answers.


"There is an art, or rather a knack to flying. The knack lies in learning how to throw yourself at the ground and miss."
4 replies: All unread, jump to last
 
User currently offlineIamcanadian From Canada, joined May 2001, 734 posts, RR: 1
Reply 1, posted (7 years 4 months 1 week 5 days 7 hours ago) and read 1456 times:

If I interpret correctly, "pulsation" is a French translation of frequency. Omega represents the angular frequency of a wave:

(just for reference, "w" is the same as "omega"; well, more or less anyway. The Greek letter "omega" is like a curvy w).

w = 2(pi) * f = 2(pi) / T

Where f is the frequency of the wave (cycles/second), and T is the period (time it takes to complete one cycle).

Other formulas you can find HERE

Hope this helps! Good luck!



Shut up and calculate.
User currently offlineGAIsweetGAI From Norway, joined Jul 2006, 933 posts, RR: 7
Reply 2, posted (7 years 4 months 1 week 5 days 6 hours ago) and read 1442 times:

Quoting Iamcanadian (Reply 2):

I'm nut sure I completely understand what w represents, but this already explains a lot. Thanks!  Smile



"There is an art, or rather a knack to flying. The knack lies in learning how to throw yourself at the ground and miss."
User currently offlineIamcanadian From Canada, joined May 2001, 734 posts, RR: 1
Reply 3, posted (7 years 4 months 1 week 5 days 6 hours ago) and read 1429 times:

Quoting GAIsweetGAI (Reply 3):
I'm nut sure I completely understand what w represents

Okay, let's put it this way:

"Light" is a form of electromagnetic radiation (or EMR). There is an EMR scale on which different "kinds" of light lie on. For example, visible light exists at a wavelength of 400 to 700 nanometers. Using the formula:

v = f(lambda)

where v = speed of a wave, f = frequency, lambda= wavelength

We can substitute

w= 2(pi)f => f = w/2pi

=> v = {w(lambda)}/ 2pi

In this case, v= 3 x 10^8 m/s

I hope this helps. Just read up on light waves, and you should be fine.  smile 



Shut up and calculate.
User currently offlineKFLLCFII From United States of America, joined Sep 2004, 3296 posts, RR: 30
Reply 4, posted (7 years 4 months 1 week 5 days 6 hours ago) and read 1419 times:

what he said.


"About the only way to look at it, just a pity you are not POTUS KFLLCFII, seems as if we would all be better off."
Top Of Page
Forum Index

This topic is archived and can not be replied to any more.

Printer friendly format

Similar topics:More similar topics...
Question On MS Excel posted Tue Dec 26 2006 18:21:28 by Matt D
A Question On Telescopes posted Mon Dec 11 2006 01:59:16 by B741
Question On MBAs posted Fri Jun 2 2006 04:57:00 by Airwave
Question On MS Paint posted Sun May 21 2006 19:52:41 by Boeing Nut
Question On The Godfather posted Fri May 5 2006 15:17:16 by Cadet57
Question On Win XP Licensing posted Sun Apr 23 2006 03:31:16 by Cadet57
Question On Amtrak Tickets posted Mon Apr 3 2006 23:40:35 by Cadet57
Question On Chicago Bulls... posted Thu Mar 17 2005 12:40:58 by EDKA
Random Question On Eggrolls posted Fri Jan 21 2005 00:13:09 by SLC1
Question On College Fraternities posted Wed Jan 19 2005 19:44:26 by PROSA