Lasers, Diffraction Gratings, NXT

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alpharhino
Posts: 13
Joined: 10 Oct 2010, 18:49
Location: Ohio
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Lasers, Diffraction Gratings, NXT

Post by alpharhino »

Hey Peeps,
This is a cool project using the NXT, lasers, and diffraction gratings.
What I did
1 I took some diffraction grating glasses and cut them up and built the machine shown here.
Image

2 Shooting the laser through the gratings to get this effect.
Image

3 Spin the motors in opposite directions and take a time exposure to achieve this effect.
Image

Or this...
Image
This is very cool and I urge you to try it if you can.

:D

Just a small safety note:
When using lasers never shine it directy into someones eyes or a camera lens.
If you shine it in someones eyes there retina will be damaged in a matter of seconds
Please be responsible. Never shine it in someone's eyes.

Regards,
Ryan
I reject your reality and substitute my own. - Adam Savage
physics-matt
Posts: 76
Joined: 29 Sep 2010, 06:57

Re: Lasers, Diffraction Gratings, NXT

Post by physics-matt »

Very cool indeed!

Could you give us some measurements of how far the gratings were from the projected images and how far apart the rings were? It would be fun to see whether we can calculate the diffraction grating separation! (I appreciate that's some strange meaning of the word "fun" ;) ).

Matt
alpharhino
Posts: 13
Joined: 10 Oct 2010, 18:49
Location: Ohio
Contact:

Re: Lasers, Diffraction Gratings, NXT

Post by alpharhino »

Sorry Matt,

I took apart this creation a while ago.
I also salvaged this from nxtasy.
I think the distance between the gratings was somewhere around 6 or 7 centimeters
-Ryan
I reject your reality and substitute my own. - Adam Savage
physics-matt
Posts: 76
Joined: 29 Sep 2010, 06:57

Re: Lasers, Diffraction Gratings, NXT

Post by physics-matt »

Oh well. Still a nice project - thanks for sharing!

Matt
alpharhinonxt
Posts: 10
Joined: 21 Oct 2010, 01:50
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Re: Lasers, Diffraction Gratings, NXT

Post by alpharhinonxt »

Here is a video


Last edited by alpharhinonxt on 27 Oct 2010, 00:57, edited 2 times in total.
I reject your reality and substitute my own. -Adam Savage
i-fixed-it-44
Posts: 106
Joined: 01 Oct 2010, 19:32
Location: The Dark Side Of The Moon
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Re: Lasers, Diffraction Gratings, NXT

Post by i-fixed-it-44 »

Great Project Alph and Hey you changed your name :o
Some projects are good others aren't,but everybody's a critic.
Vincent,On Lego.com known as MindstormsMonster
..::..:::I_Fixed_It_44:::..::..
physics-matt
Posts: 76
Joined: 29 Sep 2010, 06:57

Re: Lasers, Diffraction Gratings, NXT

Post by physics-matt »

Like the video. It's like a high-tec version of spirograph!

Matt
alpharhinonxt
Posts: 10
Joined: 21 Oct 2010, 01:50
Contact:

Re: Lasers, Diffraction Gratings, NXT

Post by alpharhinonxt »

Thanks
You sound like my Dad. :)
I reject your reality and substitute my own. -Adam Savage
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