Laser ponter "heads"

[Dave VanHorn]

Anyone know how these work?



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[TCS]

On Sun, 16 May 2004 20:12:08 -0500, Dave VanHorn <dvanhorn@cedar.net> wrote:

Anyone know how these work?
yes

 

[Dave VanHorn]

"TCS" <The-Central-Scrutinizer@p.o.b.o.x.com> wrote in message
news:slrncagi0a.36m.The-Central-Scrutinizer@linux.client.comcast.net...

On Sun, 16 May 2004 20:12:08 -0500, Dave VanHorn <dvanhorn@cedar.net
wrote:
Anyone know how these work?
yes

Thanks, I was thinking that they "just happened"..

I'd like to be one of those who know how they work..

 

[Philip A. Marshall]

On Sun, 16 May 2004 20:12:08 -0500, "Dave VanHorn"
<dvanhorn@cedar.net> wrote:

Anyone know how these work?

shine a laser pointer through a diffraction grating onto a wall. you
should get a line of dots out the other side. that's it for basic
principles, from there on in you just need to design the right kind of
diffraction device.

 

[Rich Grise]

"Dave VanHorn" <dvanhorn@cedar.net> wrote in message
news:Vf-dnY_JetG21zXdRVn-ug@comcast.com...

"TCS" <The-Central-Scrutinizer@p.o.b.o.x.com> wrote in message
news:slrncagi0a.36m.The-Central-Scrutinizer@linux.client.comcast.net...
On Sun, 16 May 2004 20:12:08 -0500, Dave VanHorn <dvanhorn@cedar.net
wrote:
Anyone know how these work?
yes

Thanks, I was thinking that they "just happened"..

I'd like to be one of those who know how they work..


Well, they have a laser diode, and a battery. The battery

forces current through the diode, and it lases.

HTH!
Rich

 

[Ian Stirling]

Dave VanHorn <dvanhorn@cedar.net> wrote:

"TCS" <The-Central-Scrutinizer@p.o.b.o.x.com> wrote in message
news:slrncagi0a.36m.The-Central-Scrutinizer@linux.client.comcast.net...
On Sun, 16 May 2004 20:12:08 -0500, Dave VanHorn <dvanhorn@cedar.net
wrote:
Anyone know how these work?
yes

Thanks, I was thinking that they "just happened"..

I'd like to be one of those who know how they work..

They use a specially designed 'grating', which is composed of dots
and clear bits in a very special pattern that causes the light to
bend due to diffraction.

Search on
"diffraction grating" "laser pointer"
on google.
Read a few of the links.

 

[Dave VanHorn]

Search on
"diffraction grating" "laser pointer"
on google.
Read a few of the links.

Thanks, I didn't know it was a diffraction grating. That makes all the
difference.

 

[Mark Fergerson]

Dave VanHorn wrote:

Anyone know how these work?

Google for "sams laser faq" (Google ignores caps and
punctuation). More than you wanted to know.

Mark L. Fergerson

 

[Dave VanHorn]

"Mark Fergerson" <nunya@biz.ness> wrote in message
news:kArqc.69489$Fl5.49918@okepread04...

Dave VanHorn wrote:

Anyone know how these work?

Google for "sams laser faq" (Google ignores caps and
punctuation). More than you wanted to know.

Exactly. I didn't know they were diffraction gratings, so I couldn't find
anything useful on them.