Re: What variables can be used for making a hand-drawn holograph?

Hi Alison!

In science fair projects it is up to the student to figure out what 
variables to test.   Science involves wondering about something,
then asking questions, then developing an experiment.  During 
the experiment Nature will answer the questions.

So, what do you wonder about when making your own Hand Drawn 
Holograms?   (Better make some first, so they get you 
started in wondering!)

Here's a question.  How can you improve your home made hologram?  
What kind of XXXXX is best?   Where XXXX could be "needle" or 
"plastic" or "light source" or "number of scratches" or all kinds 
of things.   Then the variable becomes the different types of
needles you used, or the different kind of light sources, etc.

Ask your own question about Hand Drawn Holograms, then figure
out an experiment which will answer your question.

See:

How to run a science fair project (brief article)
 http://scienceclub.org/~sciclub/cgi-bin/scifair/hint.html



Hand-drawn holograms
 http://amasci.com/amateur/holo1.html