Ceiling Sprinkler, Candle Burning, Bacteriophage, Atari Computer, How you See, Balance and more

Ceiling Sprinkler, What Makes a Candle Burn, Bacteriophage, Stripper Deck, Atari Computer, Elk Project, How you See, Ruler Balance. Mr.Wizard shows Tanis a ceiling sprinkler set up on a stand. He points out the plug made of a special combination of metals that melt at a specific temperature. This one melts at 160º C.