https://physlab-wiki.com/ 2026-05-04T01:16:22+00:00 https://physlab-wiki.com/ https://physlab-wiki.com/lib/tpl/UChicago/images/favicon.ico text/html 2021-11-08T14:49:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/physicsdemos/physics_with_a_bang/thermodynamics_and_fluid_dynamics/blow_over_sheet_of_paper?rev=1636400995&do=diff Blow Over Sheet of Paper Bernoulli's principle is demonstrated by blowing air over sheets of paper. oversized paper B4 PIRA DCS 2C20.51 text/html 2021-11-08T14:50:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/physicsdemos/physics_with_a_bang/thermodynamics_and_fluid_dynamics/ignite_hydrogen_balloon?rev=1636401033&do=diff Ignite Hydrogen Balloon A balloon filled with hydrogen gas is ignited. PIRA DCS 4BXX.XX text/html 2021-11-08T14:51:09+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/physicsdemos/physics_with_a_bang/thermodynamics_and_fluid_dynamics/imploding_oil_drum?rev=1636401069&do=diff Imploding Oil Drum The air inside a 55 gallon steel oil drum is pumped out with a vacuum pump. When the pressure inside the drum is sufficiently reduced atmospheric pressure will cause the drum to violently collapse. PIRA DCS 2B30.20 F5 barrel attachment, pump on cart by workbench text/html 2021-11-08T14:51:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/physicsdemos/physics_with_a_bang/thermodynamics_and_fluid_dynamics/liquid_nitrogen_bomb?rev=1636401092&do=diff Liquid Nitrogen Bomb A 20 ounce soda bottle is filled with liquid nitrogen to a height of 2 1/4 inches. The bottle is quickly capped, placed in a pan of water, and then covered with a plastic garbage can. The explosion of the bottle is so powerful that it sends the garbage can to a height of more than 20 feet. text/html 2021-11-08T14:52:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/physicsdemos/physics_with_a_bang/thermodynamics_and_fluid_dynamics/smoke_rings?rev=1636401152&do=diff Smoke Rings A large plastic garbage can with a hole cut in the bottom and a rubber membrane covering its mouth is filled with vapor from a fog machine. When the rubber membrane is hit large smoke rings are produced which travel the length of the lecture hall with little dissipation. text/html 2021-11-08T14:52:57+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/physicsdemos/physics_with_a_bang/thermodynamics_and_fluid_dynamics/sulfur_hexafluoride_boat?rev=1636401177&do=diff Sulfur Hexafluoride Boat—Retired A glass aquarium is filled with sulfur hexafluoride gas. When a simple box-shaped boat made of aluminum foil is dropped into the aquarium it floats on top of the gas. One may scoop the invisible gas out of the aquarium and into the boat to make it sink. text/html 2021-11-08T14:53:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/physicsdemos/physics_with_a_bang/thermodynamics_and_fluid_dynamics/un-mixing?rev=1636401206&do=diff Un-mixing The “un-mixing” apparatus consists of a large, transparent cylinder and a smaller, coaxial cylinder that can be rotated inside. The space between the two cylinders is filled with glycerine. A visible pattern is made in the glycerine using a syringe to inject an ink made of glycerine and graphite. When the inner cylinder is rotated, the ink appears to mix with the rest of the glycerine. However, when the cylinder is rotated in the opposite direction the pattern is re-formed. text/html 2021-11-08T14:53:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/physicsdemos/physics_with_a_bang/thermodynamics_and_fluid_dynamics/vacuum_cannon?rev=1636401225&do=diff Vacuum Cannon—Apparatus Under Construction A piece of PVC pipe with a ping pong ball inside is sealed at both ends with aluminum foil and evacuated with a vacuum pump. When one of the aluminum foil seals is ruptured, the ping pong ball is fired at very high velocity from the opposite end of the pipe. text/html 2021-11-08T14:54:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/physicsdemos/physics_with_a_bang/thermodynamics_and_fluid_dynamics/walking_on_water_and_cornstarch?rev=1636401258&do=diff Walking on Water and Cornstarch A tub is filled with a mixture of water and cornstarch, a non-Newtonian fluid. If done quickly enough, one may walk on it. J0 tub PIRA DCS 2C60.30