ScienceFaire

Atomic Clock??

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You know those lead aprons that the Dentist uses….?

Vaseline and Uranium Glass (ca. 1930s)

Uranium was first used to color glass in the 1830s and it has continued to be used for this purpose with the exception of a fifteen year (or so) period beginning in World War II.  Prior to World War II, natural uranium was used, but when Vaseline glass production resumed in 1959, the switch was made to depleted uranium (DU). All of the items shown here contain natural uranium except the tube on the right which contains depleted uranium. At present (2004), a few companies in the U.S. are still making Vaseline glass (e.g., Boyd Crystal Art Glass, Mosser, Summit Glass and Fenton Glass), but it is exclusively of the decorative variety. No dinnerware is being made.

Dwarf Tossing .50 Caliber Style

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**WARNING** **WARNING** This is a GRAPHIC Demonstration of “Newton’s Third Law of Motion” which states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A (a .50 Caliber munition) explodes and exerts a force on object B (the .50 Caliber rifle), then object B will subsequently pass the axis of that force to objects D1 and D2 (Dwarf 1 and Dwarf 2). Notice how consistently the forces are exerted on the different objects.

Click for GRAPHIC DEMONSTRATION of Newton’s Third Law

The Third Law can be used to explain the recoil and lift a .50 Caliber Rifle generates on the two volunteers for this important SCIENTIFIC Experiment. As always, we note that no dwarves were harmed or injured during this experiment, but do to it’s graphic nature you must click the picture to view the experiment.

**Dwarf Tossing – Laws may prohibit dwarf-tossing implicitly, but there are not explicit laws preventing a consenting dwarf from being ‘tossed’.

Read moreDwarf Tossing .50 Caliber Style