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Hot things are materials that have significant thermal energy. Thermal energy is the vibration, rotation and jostling of atoms and/or molecules. This can be transferred from thing to thing such that hot things can be useful for heating other things. Hot things can also be quite dangerous as they can cause burning such as fire. The following are common examples of hot things.
Barbecues | Boilers | Brake Pads Stopping a Vehicle | Burning Charcoals | Burning Logs / Wood | Camp Fires | Candles | Coffee | Cooking Ranges | Curling Irons | Deserts | Exothermic Chemical Reactions | Fire | Fireplaces | Forest Fires | Hairdryers | Heaters | Hot Baths | Hot Coals | Hot Food | Hot Pavement | Hot Pots / Pans | Hot Sand / Beaches | Hot Springs / Geothermal Springs | Hot Water | Hydrothermal Vents | Internal Combustion Engines | Irons | Kettles | Lamps | Lasers | Light Bulbs | Magma / Lava | Matches / Lighters | Molten Carbon | Molten Metal / Iron | Molten Rock | Ovens | Planet Mercury | Planet Venus | Plasma Flames / Plasma Torches | Quark–gluon Plasma | Quasars | Running Electronics / Computers | Running Machines / Engines | Soups | Stars | Steam | Steam Engines | Supernovas | Tea | The Earth's Core | The Sun | Thermal Radiation | Toaster Ovens / Toasters | Torches | Volcanic Eruptions | Welders |
Quark–gluon plasma filled the entire Universe in the first instants after the Big Bang. It is between 7 trillion and 10 trillion degrees Fahrenheit and is far hotter than the Sun. This is the hottest known temperature that has actually occurred. In fact, quark–gluon plasma have been generated on Earth using a heavy-ion collider.Venus is the hottest planet in the solar system despite the fact that Mercury is far closer to the Sun. This is due to the high pressure atmosphere of Venus that is about 96% carbon dioxide. Mean surface temperatures on Venus are 867 °F or 464 °C.Pure energy such as a laser aren't considered hot because they don't contain matter. However, they will typically heat any matter that they contact and are therefore hot in the sense that they can create / transfer heat.Hot things are dangerous, don't play with them. If you find something that might be hot, don't touch it and tell an adult.
Science
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An overview of materials quality with examples.
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An overview of the characteristics of a good theory.
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A list of common academic disciplines.
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