of Electricity, created by industrial equipment manufacturer
Cutler-Hammer, is an excellent review of the basics of electrical
circuits, characteristics and Ohm's Law. Try the review questions
to test your knowledge.
of the Elements at Los Alamos National Laboratory is one of
many available on the World Wide Web, but this version is designed
for High School students. Clicking on a cell in the table takes
you to a page with information on the history, sources, uses, costs
and hazards of each element. The elements which make solid state
electronics possible are Germanium and Silicon.
vacuum tubes are no longer used for the logic circuits in computers,
they are still in use in specialized applications, and of course
as monitors for television and computers. Eric Barbour has a good
explanation of the history and operation of the device which made
radio, television and computers possible at How
a Vacuum Tube Works.
For a great
animated demonstration of how a MOSFET transistor is manufactured
and operates go to Molecular
Expressions: Electricity and Magnetism Tutorials.
Electronics has some useful tutorials on electronic components,
measuring tools and prototype boards (also known as breadboards).
There are also some simple circuits to build. Although several links
are incomplete, the site is a useful introduction.
Lab has many useful links, but the Resistor
Color Code Calculator is way cool! Why memorize the color code
when you can simply pick the colors and get your result instantly?