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The type of pumps used in firefighting helicopters cannot continue running once in the air. As soon as the pump is shut off, any caught diver would simply drop back into the water. The pumps also do not have enough suction to suck in a person in the first place.
When the engine runs, it heats the water. Cooling is accomplished by the water steaming off and removing heat from the engine. When an engine runs under load for a period of time, it is common for the water in the reservoir to boil. Replacement of lost water is needed from time to time. A danger of the water-cooled design is freezing in cold ...
Higher convection in the warmer water may also spread ice crystals around faster. [23] Frost: Frost has insulating effects. The lower temperature water will tend to freeze from the top, reducing further heat loss by radiation and air convection, while the warmer water will tend to freeze from the bottom and sides because of water convection.
During the final stage of freezing, an ice drop develops a pointy tip, which is not observed for most other liquids, and arises because water expands as it freezes. [8] Once the liquid is completely frozen, the sharp tip of the drop attracts water vapor in the air, much like a sharp metal lightning rod attracts electrical charges. [8]
The show did not follow a consistent calendar of on- and off-air periods for its first-aired episodes. The official MythBusters website at one point sorted episodes by calendar year, but as of 2024, sorts them into 19 seasons (with the first being the three pilots).
Directional freezing can freeze water, from only one direction or side of a container, into clear ice. [1] [2] [3] Directional freezing in a domestic freezer can be done by putting water in a insulated container so that the water freezes from the top down, and removing before fully frozen, so that the minerals in the water are not frozen. [4]