Search found 59 matches

by Gall
Fri Feb 11, 2011 9:22 am
Forum: Российский Форум
Topic: Интересная ссылка
Replies: 28
Views: 22699

Интересная ссылка

Независимо от толщины эмульсии, "большое смещение" фотопластинки относительно предмета за время экспозиции недопустимо. Вернее допустимо - однократно, при условии того, что до и после смещения никаких других вибраций не было. Так что объяснение с "большой толщиной эмульсии" и бол...
by Gall
Mon Jan 17, 2011 8:36 am
Forum: Российский Форум
Topic: Не могу купить Славич!
Replies: 6
Views: 6645

Не могу купить Славич!

English: Discussing problems purchasing PFG plates in Russia directly from manufacturer and suggested alternatives. Probably this does matter only for people living on territory of the Ex-USSR.
by Gall
Mon Dec 06, 2010 8:20 am
Forum: Beginning Holography
Topic: Home Optical Table
Replies: 30
Views: 15414

Home Optical Table

I personally found a solution I like: a heavy board of any kind lying on bag(s) with sand. If this is not enough, partially inflated tubes under bags work fine. I also made a portable version of this one: a wooden suitcase filled with a single big bag of sand. If open, a heavy wooden board covered w...
by Gall
Thu Nov 18, 2010 8:41 am
Forum: Российский Форум
Topic: Интересная ссылка
Replies: 28
Views: 22699

Интересная ссылка

У меня вообще создалось впечатление, что это развод. Очень уж странные заявления, которые непонятно как согласуются с законами оптики. Насчет когерентности лазера, например - "отбор не требуется"??? Голограммы на фотографиях подозрительно яркие, похоже на БХЖ. Но если это БХЖ, то каким лаз...
by Gall
Sun Nov 14, 2010 6:23 am
Forum: Off Topic
Topic: 442nm HeCd Replacement
Replies: 3
Views: 2925

442nm HeCd Replacement

I'd like to try blue diodes as well. But now I'm too busy making a unidirectional ring MOPA laser from an SSY-1 for pulsed holography :)
by Gall
Thu Nov 11, 2010 4:20 am
Forum: Off Topic
Topic: 442nm HeCd Replacement
Replies: 3
Views: 2925

442nm HeCd Replacement

Somebody reported that Nichia blue diodes from Casio projectors that are solt onn eBay here and there have good coherence at certain current if thermally stabilized. Let's try?
by Gall
Mon Nov 08, 2010 3:05 pm
Forum: AgX
Topic: Sergey Vorobyov's developer - OD-1
Replies: 1
Views: 2607

Sergey Vorobyov's developer - OD-1

Some time ago Mr. Vorobyov invented a developer for silver-halide holograms that does not contain any rhodanides. It is ideal for both beginning and advanced holography. The original Russian article is here: http://www.holography.ru/tech8rus.htm Original formula: Metol = 2 g Sodium Sulphite (anhydro...
by Gall
Mon Nov 08, 2010 1:49 pm
Forum: Российский Форум
Topic: Магазин
Replies: 3
Views: 5577

Магазин

[English summary] A new hologram shop is now open in Moscow instead of the one that was closed this summer.
by Gall
Mon Nov 01, 2010 3:36 am
Forum: about holographyforum.org
Topic: Russian Forum?
Replies: 4
Views: 13474

Russian Forum?

Colin, I've sent an email to you about the Russian part. I would like to make the archives available somewhere. I can clean them up and fill an empty forum with them. If there is some problem having a Russian part on the English forum, I can make a separate Russian forum as well. But it is not so co...