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Early forms of dynamite were highly sensitive and difficult to work with. [©Jupiter Images, 2010]

Science and Engineering » Physical Sciences

Who invented dynamite?

Find out who invented dynamite and how his legacy has been carried on.

Titanium dioxide has a low absorbtion of visible light. [©Jupiter Images, 2010]

Science and Engineering » Physical Sciences

Why is titanium dioxide the most widely used white pigment?

Learn why titanium dioxide is the most widely used white pigment.

More than 75 percent of ammonia production in the U.S. is used for fertilizers. [©Jupiter Images, 2010]

Science and Engineering » Physical Sciences

Who developed the process for making ammonia?

Find out who developed the process for making ammonia.

Modern roads are typically surfaced with durable portland cement. [©Jupiter Images, 2010]

Science and Engineering » Physical Sciences

How was early macadam different from modern paved roads?

See how early macadam was different from modern paved roads.

Belgian block is subject to forming ruts and hollows. [©Jupiter Images, 2010]

Science and Engineering » Physical Sciences

What is Belgian block?

Find out what Belgian block is and when it was first used.

Aqua regia is also known as nitrohydrochloric acid. [©Jupiter Images, 2010]

Science and Engineering » Physical Sciences

What is aqua regia?

Find out what aqua regia is and what its makeup is.

Solder is used in joining other metals together. [©Jupiter Images, 2010]

Science and Engineering » Physical Sciences

What is solder?

Find out what solder is and when it was first used.

Alchemy focused on changing lead into gold. [©Jupiter Images, 2009]

Science and Engineering » Physical Sciences

Why are alchemical symbols for metals and astrological symbols for planets identical?

Why are alchemical symbols for metals and astrological symbols for planets identical?

Creosote can be burned as a natural anti-bacterial agent. [©Jupiter Images, 2009]

Science and Engineering » Physical Sciences

What is creosote?

Learn about creosote, a toxic liquid derived from coal that has positive benefits.

Dry ice was first used commercially to keep ice cream from melting. [©Jupiter Images, 2010]

Science and Engineering » Physical Sciences

How is dry ice made?

Find out how dry ice is made and more about the process.

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