Science Gizmo: ENERGY BALL

Science Gizmo: ENERGY BALL

•  This science gizmo Energy Ball now has upgraded electronics, and a pull tab to preserve battery life.
-  It is a great way to demonstrate for kids how to conduct electricity in a circuit.
-  The energy ball contains 2 small metal electrodes that, when touched simultaneously, cause it to light up.
-  Comes with a Teacher’s Guide. No other energy ball on the market with these upgraded features.

•  A resistance touch switch requires two electrodes to be in physical contact with something electrically conducting (such as a finger) in order to function.
-  They function by decreasing the resistance between two metal pieces.
-  Thus, its construction is significantly easier than that of the capacitance switch.
-  By placing one or two fingers across the plates, the switch can be turned on or off.
-  When the finger(s) are removed from the metal pieces, the gadget is turned off.

•  The base of the first transistor would be connected to one of the electrodes in one version of a resistance touch switch involving two Darlington-paired transistors.
-  Also usable is an N-Channel, enhancement-mode, metal oxide field effect transistor.
-  Its gate can be connected to one of the electrodes and the other electrode through a positive voltage and a resistance, respectively.
-  View other Gizmos options
(Note *Brand may vary from image displayed).

►  Science Gizmos are fun way to demonstrate properties of mechanical applications used and taught in Physics and Chemistry laboratories.
►  Enjoy the exciting discovery of how this easy-to-use apparatus works and understand the science behind why it works the way it does !

(Wikipedia excerpt: ..."...A gizmo is a gadget, especially one whose real name is unknown or forgotten.... A gadget is a mechanical device or any ingenious article.[2] Gadgets are sometimes referred to as gizmos. ...The etymology of the word is disputed. The word first appears as reference to an 18th-century tool in glassmaking that was developed as a spring pontil.[3] As stated in the glass dictionary published by the Corning Museum of Glass, a gadget is a metal rod with a spring clip that grips the foot of a vessel and so avoids the use of a pontil".

Gadgets were first used in the late 18th century.[4] According to the Oxford English Dictionary, there is anecdotal evidence for the use of "gadget" as a placeholder name for a technical item whose precise name one can't remember since the 1850s; with Robert Brown's 1886 book Spunyarn and Spindrift, A sailor boy's log of a voyage out and home in a China tea-clipper containing the earliest known usage in print.[5]...")

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