Cathode Ray Tube
Cathode Ray Tube: The basis of pictures in a TV or waveform measurements on an oscilloscope is the cathode ray tube: a beam of electrons, deflected by vertical and horizontal electric fields, impinging on a phosphorescent screen. When the electrons strike the screen, they excite the molecules in the screen to higher energy levels. As […]
Bowling Ball Pendulum
Bowling Ball Pendulum: Key Concept: Conservation of Energy Energy cannot be created or destroyed. It can only change form. There are two observable forms of energy, kinetic energy (or “energy in motion”) and potential energy (or “stored energy”). The total energy of a system is equal to the sum of its potential energy and its […]
Workshop for Teachers
Radio Jove and SID Monitors, the Bridge between Ethiopia and USA Convener Abebe Kebede (NC A&T State University) Joseph Shiferaw (Adama University), Dereje Abera (Debre Birhan University), Kibrom Ebuy (Mekele University), Wanda Diaz (Harvard University) In Ethiopia space technologies are routinely being applied to assist in development, the penetration of these fields into the curriculum, […]