Recent content by Owen-

Perfect thanks a lot!

This seems like a very basic question that I should know the answer to, but in my image processing class, my teacher explained that a basis set of images(matrices) are orthonormal. He said that the DOT product between two basis images (in this case two 2x2 matrices) is 0. so, for example...

sorry it should read 4.3. That might have caused some confusion. I'm just being stupid, there is none - Relativistically looked incorrect to me on 2nd glance :P Chestermiller, thanks! I think I can do this now, wasn't considering needing the LT at the two distinct points - its a lot easier...

Any way to fix the typo in the title? :S

Homework Statement A spaceship travel from Earth \alpha-Centauri (4.3 light years away) at a constant velocity. If the time elapsed onboard during the journey is 4.e years, what is the speed of the spaceship? The spaceship is powered by a drive which works by ejecting protons behind the ship...

Guessing you want the specific heat capacity eqn Q=mc delta t You do need to convert to Kg

Ah ok thanks :) Just let me confirm - in a traveling wave the energy traveling in the y direction varies, but the energy transmitted along the x-axis remains constant? :s

Well it depends on the strength of the impulse, the cords being identical and if they are extensible, but assuming the obvious things here.. The top cord has both the force of the impulse and the force of the weight acting on it, whereas only the force of the impulse affects the bottom cord...

After looking at my notes and http://cnx.org/content/m16027/latest/" I have become utterly confused about Energy transmission in Waves. What? In a traveling wave KE=PE? If so, when a particle is at its max displacement, KE=PE=0 and so KE+PE=0 and yet then a particle is as its mean...

Homework Statement What is the best time of year to view the Glalactic Centre (RA=17h 45m Dec=-29[degrees]) with an optical telescope? Would it be visible from the uk?At what local sidereel time would it be highest in the sky, and what is its parallax if the galactic centre is 8 kpc away...

I did? its the first picture? Isnt it loading properly for people?

Homework Statement Homework Equations http://img42.imageshack.us/img42/7931/image24yc.jpg The Attempt at a Solution To make things easier I just scanned my work - I'm at a loss of what to do next :( [PLAIN][PLAIN]http://img816.imageshack.us/img816/6139/image25t.jpg Thanks a...

sorry - didnt get a chance to thank you for that - was too busy rushing out to get the project handed in - thanks a lot! :)

Homework Statement I need to find the uncertainty on "n2" I have the uncertainty on lambda, n1 is not a variable - its 2, R is a constant. Only things that have errors are lambda and n Homework Equations The Attempt at a Solution Tried working out using calculus, but every...

I see your point, but what if its only a local minimum? Say there was another minimum close to it that was lower. Its not really mathematical if you have to assume that the curve only has one minimum point.