Instructables

Water prism, simple 1

A simple Water Prism, made of glass from picture frames
 
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Step 1: Supplies

materials obtained from a discount dollar store.

Step 2: Construction

Sand all edges of glass with emery paper. Glass is cleaned with acetone (nail polish remover)or methyl hydrate (gasline antifreeze) to remove all traces of oil. Large glasses are taped 3mm apart, siliconed, folded and placed on end with 60 degree angle. silicone is applied to end edges and an end plate is placed on the fresh silicone. Allow to dry. Place assembly on other end glass and mark outline. Apply silicone to second end of assembly and apply end plate, taking care thae edges that form the bottom support of the water prism are parallel. allow to dry and apply a second layer of silicone along inside of seams to ensure water tightness.
Xellers5 years ago
Very well done. But where can you get a real glass prism?
jeandeau (author)  Xellers5 years ago
surplusshed.com is one good source I recommend with quality surplus and excess inventory clearances. American science and surplus has low grade hobby quality and a little military surplus. Anchor Optics is a source of very high quality pieces at reasonable prices. Edmunds scientific is a reliable source of hobby supplies but not equal to Anchor by any stretch. Thank you for the compliment. Water has a refractive index of 1.3 with air. The density of the water is extremely uniform and sheet glass is typically extremely flat. The result is a prism giivng truly excellent and uniform optical quality though the color separation is not as great as glass or lead glass (crystal). I purchased a crown glass prism at a hobby science shop for $12 and it has density variations that are evident when you look through it and this shows as a wavy spectrum display when sunlight is separated onto the wall.
iectyx3c6 years ago
Love the dollar store, great idea to get the glass there. You can even use the glassless picture frames for little oil or acrylic paintings which do not need glass. Sometimes I take out the glass anyway to frame matte finish photos for more detail. +1 nicely done.
rdy4trvl6 years ago
GorizzazMiko - it works great in the dark...you just can't see it.
These things are freaking awesome.
Great job.

I'm assuming these don't work in the dark?
Nice job, I need to get some glass at the store nearby...
+1 rating.
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