Search found 200 matches
- Tue Oct 04, 2016 9:41 pm
- Forum: General Holography
- Topic: Ain't nobody doing a anything?
- Replies: 17
- Views: 10410
Re: Ain't nobody doing a anything?
We're doing technical stuff, but display holographers aren't interested in technical holography. There is certainly some of that. However, not all of us are display holographers. I, for one, am just a rank amateur willing to waste lots money on an interesting hobby. Someday I may actually produce a...
- Fri Jan 01, 2016 12:43 pm
- Forum: Beginning Holography
- Topic: pulsed holography
- Replies: 4
- Views: 3018
Re: pulsed holography
Yeah, I thought first about the energy levels a single pulse would need to provide. There are not many 10,000 Watt diode lasers out there. However, why does it need to be all in one pulse? Isn't pulsed mode (with the diode being pulsed continually with, say, a 50% duty cycle) used in many laser diod...
Re: hologram
Second time through the alcohol gave a nice improvement.
- Fri Nov 27, 2015 5:27 pm
- Forum: Beginning Holography
- Topic: It's time...guidance apppreciated.
- Replies: 6
- Views: 4562
Re: It's time...guidance apppreciated.
I also recommend the Integraf kit as a starting point. If your intent is to discover how interesting a hobby in holography can be, the Integraf kit will get you involved; the Liti kit has you snap a few plastic parts together then flip a switch. Either way, you'll probably end up with at least one (...
- Mon Aug 10, 2015 8:19 am
- Forum: Events, announcements, and news
- Topic: MIT open courseware
- Replies: 2
- Views: 24436
MIT open courseware
The MIT Holographic Imaging course, first taught in spring 2003 and now part of the MIT Open Courseware initiative, is featured here: https://www.inverse.com/article/5173-make-your-own-hologram-at-m-i-t-this-week-s-saturday-syllabi Here is a direct link to the course, itself: http://ocw.mit.edu/cour...
- Fri Jul 24, 2015 9:35 pm
- Forum: General Holography
- Topic: How to get circular fringes?
- Replies: 21
- Views: 11076
Re: How to get circular fringes?
Ok. I think the PDF upload problem is resolved. That system admin guy really ought to be fired.
- Fri Jun 19, 2015 5:14 pm
- Forum: General Holography
- Topic: Spatial Filter
- Replies: 9
- Views: 6809
Re: Spatial Filter
Ouch!! Those images are a little large. Let's try something more modestly scaled.
- Fri Jun 19, 2015 5:05 pm
- Forum: General Holography
- Topic: Spatial Filter
- Replies: 9
- Views: 6809
Re: Spatial Filter
I was right about one thing and wrong on another. The 910 pinhole adjustment is a bit stiff, but it also has a 10x objective.
- Fri Jun 19, 2015 9:48 am
- Forum: General Holography
- Topic: Spatial Filter
- Replies: 9
- Views: 6809
Re: Spatial Filter
I have couple of Newport spatial filters that are surplus. One is the 900 model without pinhole. The other is a 910 without objective. When I am no longer at the place that is not home, I will take a couple of photographs and recheck how smoothly the adjustments move. (If I remember correctly, the p...
- Fri May 29, 2015 6:46 pm
- Forum: For Sale / Want to Buy / Trade
- Topic: Two holograms
- Replies: 4
- Views: 3703
Re: Two holograms
Agreed!!BobH wrote:I'm the first bidder! TJ really should live on with his group of lasers in the Vintage Laser Archive.
I'd put the transmission on my watch list, but hadn't quite made it to entering a starting bid. My loss. I won't bid against you.