PHYS 130 Optics Part 4: Aberrations

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7 жыл бұрын

Video lecture for PHYS 130 at the University of Alberta. When building precision, optical instruments some of the approximations which are made when dealing with lenses and spherical mirrors do not work leading to defects in the image produced which are called aberrations. Here we discuss and demonstrate two such effects: spherical and chromatic aberrations.

Пікірлер: 24

@puddysbrother664 3 ай бұрын

Very illuminating… what a noble way to follow up so many great 007 films.

@Zakaria_Jony 4 жыл бұрын

Thank you so much, sir. I am a sophomore student of Physics at University of Dhaka. Your video helped me a lot learning Physics. Please keep helping us.

@PSMS.2005 4 ай бұрын

Good content and best explanation

@michellehammar3555 2 жыл бұрын

Best explanation on the entire youtube!

@berzerkdude5755 3 жыл бұрын

Finally i can imagine and visualize this terminologies.

@vikaskumarsahu5755 7 жыл бұрын

Awesome explanation and demonstration sir... tqsm :-)

@nouradrah6948 6 жыл бұрын

very helpful! thanks

@islamicbrotherhood9574 6 жыл бұрын

Sir please upload other videos on coma, distortion....

@cliffr3262 7 жыл бұрын

Interesting video Roger. I was wondering if you have a more in-depth discussion on comatic aberrations or if you could comment on the following; will changes in aperture affect coma, if so how?

@ruhanborah2255 4 жыл бұрын

Thank you... thank you... very very thank you Sir please upload for coma, astigmatism & distortion

@applekalba6468 6 жыл бұрын

Excellent

@RekhaSharma-nn9xn 7 жыл бұрын

good work

@saransh85 6 жыл бұрын

You are awesome

@ChineduDebonair-qg1xn 9 ай бұрын

I love this

@goofi953 4 жыл бұрын

Great video Mr Moore!! Where can I order the equipment youv'e used in the video?

@sudhakarseepana7935 6 жыл бұрын

It's very fair to me.

@philflip1963 11 ай бұрын

At last an explanation of these issues! Many thanks. I hear that spherical aberation is cited as a problem in astronomical reflecting telescopes so why don't they use parabolic mirrors?

@rogermoore7293 11 ай бұрын

Purely because it is much, much cheaper to make spherical mirrors than parabolic ones given that the surface has to be accurate at scales of the wavelength of light. You do see parabolic reflects for satellite dishes though because you can make these by bending metal in a press and this is easily good enough for millimetre precision which is all you need with the longer microwave/radio wavelengths.

@philflip1963 11 ай бұрын

@rogermoore7293 Thanks very much for your reply, which explains the issue very clearly.