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A swan neck flask, also known as a gooseneck flask, is a round-bottom flask with a narrow s-shaped tube as its opening to reduce contact between the inner contents and external environment. The motion of air through the tube is slowed and aerosolized bacteria or other particles in the air tend to become trapped by moisture on the tube's inner ...
Gooseneck (piping), a piping or ductwork feature; A crowbar (tool) A gooseneck flask (or swan neck flask) is a flask used in biology that has a curved neck to trap particulate; A gooseneck trailer hitch, for commercial and agricultural use; Gooseneck (fixture), a type of flexible tubing used in gooseneck lamps or microphone stands
Schrödinger's cat: a cat, a flask of poison, and a radioactive source connected to a Geiger counter are placed in a sealed box. As illustrated, the quantum description uses a superposition of an alive cat and one that has died. In quantum mechanics, Schrödinger's cat is a thought experiment concerning quantum superposition.
Louis Pasteur's 1859 experiment is widely seen as having settled the question of spontaneous generation. [47] He boiled a meat broth in a swan neck flask; the bend in the neck of the flask prevented falling particles from reaching the broth, while still allowing the free flow of air. The flask remained free of growth for an extended period.
A vacuum flask (also known as a Dewar flask, Dewar bottle or thermos) is an insulating storage vessel that slows the speed at which its contents change in temperature. It greatly lengthens the time over which its contents remain hotter or cooler than the flask's surroundings by trying to be as adiabatic as possible.
Megan Davidhizar received two rubber ducks from her students during her first year teaching high school freshmen 16 years ago. She displayed them on her desk and other students saw the ducks and ...
Although the thought experiment was formulated as an introduction to Heisenberg's uncertainty principle, one of the pillars of modern physics, it attacks the very premises under which it was constructed, thereby contributing to the development of an area of physics—namely, quantum mechanics—that redefined the terms under which the original thought experiment was conceived.
Heron's fountain is not a perpetual motion machine. [2] If the nozzle of the spout is narrow, it may play for several minutes, but it eventually comes to a stop. The water coming out of the tube may go higher than the level in any container, but the net flow of water is downward.