[Joel] wanted a huge-screen TV on the cheap, so he converted an overhead projector to something he can use with his XBox. Using a bare LCD panel with an overhead projector is a decades-old hack ...

Encourage students to place their spheres at varying distances from the overhead projector to increase the 3-D effect of the demonstration. Gather students in the back of the classroom and explain ...

Place the glass apparatus on the overhead projector. Wait until a while ring of solid ammonium ... to protect the eyes and hands from the strong acid and base used in this demonstration. Keep the ...

To Conduct Demonstration Place some pepper on the surface of the copper sulfate solution to make it visible. Place the apparatus on an overhead projector and focus on the floating pepper. There should ...