New Jersey Scuba Diving

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Welcome to NJScuba.net, a website dedicated to exploring the New Jersey / New York region underwater -- "Wreck Valley". Here you will find information on dive sites, marine biology, artifacts and activities, gear and training, and many other subjects.

The menu changes depending on where you are. The search works very well - try it. The 'Random' link can take you anywhere. Pick a subject, and dive in !!!

You can easily get involved too - comments are open on all dive sites. Leave your trip reports and updates right there in the website. If you have something more you'd like to add, you can get in touch with me through the contact page.

Shipwreck Mohawk
Dive Sites
Redbird Subway Car Reef
Artificial Reefs
Sea Raven
Marine Biology
Glassware from the Mohawk
Artifacts
Scuba Fins
Gear & Training

Glass & Ceramics

Delaware Water Gap Bottles

Glass is a hard substance, usually brittle and transparent, composed chiefly of silicates and an alkali fused at high temperature.

Composition and Properties of Glass

Most glass is a mixture of silica obtained from beds of fine sand or from pulverized sandstone; an alkali to lower the melting point, usually a form of soda or, for finer glass, potash; lime as a stabilizer; and cullet ( waste glass ) to assist in melting the mixture. The properties of glass are varied by adding other substances, commonly in the form of oxides, e.g., lead, for brilliance and weight; boron, for thermal and electrical resistance; barium, to increase the refractive index, as in optical glass; cerium, to absorb infrared rays; metallic oxides, to impart color; and manganese, for decolorizing.

More: Glass & Ceramics ...

Disclaimer:

I make no claim as to the accuracy, validity, or appropriateness of any information found in this website. I will not be responsible for the consequences of any action that is based upon information found here. Scuba diving is an adventure sport, and as always, you alone are responsible for your own safety and well being.

Copyright © 1996-2026 Rich Galiano
unless otherwise noted

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