Holographyforum.org / holowiki.org

I received a notice saying that the transfer is complete. It should be better now.

Colin

It wouldn’t let me transfer it because it was expired. I renewed it. I will sort how to transfer it later. Thank you!

I don’t remember how to do the transfer.

Holographyforum.org is up for renewal. Would you like for me to transfer ownership to you?

Hi John,

Is holographyforum.org even used any more?

Cheers!
Colin

I was sent this question and as I have no experience I thought I would post it here: Hopefully you can help me with a problem im having with Mr. Jeff's method. I'm trying his DIY method for red lasers. I got everything in the list but the issue i'm having is that my gelatin solution gets very hard a...

How heavy will the table be?

This is for home made plates with chemicals available to residential addresses from the Internet. This version is only green sensitive but we could do a group buy on the red sensitizer.

http://d-i-yscience.blogspot.co.uk/2016 ... s.html?m=1

You might be lucky to have a solar astronomer near you with a spectrograph. You can make very fine measurements but the instrument is costly. If you have a nice diffraction grating handy you can make one and calibrate it on a sodium vapor lamp (street light). http://www.skyandtelescope.com/get-invol...

mEqs are very useful for water chemistry. I have to use them all the time. I often have to calculate resulting pH from adding organic acids to water. The pKs are such that there are buffer pHs to overcome.