Natural Science Forum / Physics / Optics / January 2005

I inherited this beast of a scope when I got here, it was covered in
dust and sitting forlornly in a corner.  In the process of disassembling
and cleaning it, I discovered what the random parts floating around the
lab went to.  Some relevant paperwork refers to a 'Zeiss ACM' ...

Is a leadlight GPL105 model good for modding?
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=14954&item=5741853246
&rd=1&ssPageName=WD1V
Kre¹o

So I spent newyears in Cancun, Mexico. Let me tell you it was awful :-)
Anyway...
Speaking of shining lasers at airplanes..lawlessness, stupidity, etc...
There was this one club that was shining this BEAST of a green DPSS unit up

http://www.cnn.com/2004/US/12/29/laser.plane/index.html
CNN is reporting that six commercial airliners have been hit
with lasers in the last four days.
Brian

I spent some time at the CDRH site the other day trying to figure out
what the legal requirements are for legally obtaining, selling, and
manufacturing laser products, and also as it pertains to importing a
laser from an overseas vendor.

Any experience with them?  Shanghai Dream say their product is better
than Viasho, because Viasho "only lasts 6 months."
They've got lower prices on 150mW 532nm, $750 vs. $850 to $950 depending
on VB/VA type from Viasho.

Hy!
I would like to build a laser, actually somthing like this:
http://www.lasermate.com/GMA.html
http://www.lasermate.com/GME.html

Hi, i'm looking for a highpowered handheld (pointer) UV laser, i'm not
sure if there's any out there, does anyone know where to purchase one?
also, are UV laser beams visible ? i think UV beams can be seen because
it reflects off air particles better than other lasers, correct?

These two: Untested.  Trnaslation: They probably don't work.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=7321&item=3830219515
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=7321&item=3830218490
This one from same seller "outputs a nice small beam", and includes ...

I'm looking for any information (book, website, you ;-) about the practical measurement of the
excentricity of a marine sextant. Which tools to use ? how to do ?
Thank you

http://cnn.netscape.cnn.com/news/story.jsp?flok=FF-APO-PLS&idq=/ff/story/0001/20
041229/2235988840.htm&photoid=20041217KIE01D
Anybody have perspective on this problem?
Best regards
mark

I am very new to all of this, but I am curious about the freeze ray
gun.
There is a article from some time ago on internet talking about the
discoveries of a laser pistol able to deliver a consistant ion charge.

We are thinking of doing an experiment with a 3.39um HeNe laser, to
measure some rapidly changing absorbance properties of a combustion event.
I need to find a detector for 3.39um that has a frequency response of at
least 100kHz, and sensitive enough to respond to power levels of ...

I'd like to use the Hubble null lens problem as a teaching example in a
training course I am running next month in Oxford
(http://www.lighttec.fr/applicnotes/Oxford_course_prospectus.pdf). Where can
I get a prescription for the null lens and details of the spacer error that

Hi, I have Male Pattern Baldness and am intrigued by the "LaserComb"
gadget(laser comb hair regrowth devices) See Ebay item # 5547912149 for
one that has added an LED, the LEIMO.
LEIMO, which claims as its specs: