Editing 2743: Hand Dryers
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==Explanation== | ==Explanation== | ||
− | A {{w|hand dryer}} is an electrical device which uses air flow, typically of hot air, to dry the user's hands after they have just washed them. In the 30 or so seconds it takes to | + | {{incomplete|Created by a DYSON ENGINEER - Please change this comment when editing this page. Do NOT delete this tag too soon.}} |
+ | A {{w|hand dryer}} is an electrical device which uses air flow, typically of hot air, to dry the user's hands after they have just washed them. In the 30 or so seconds it takes for user's hands to be dried, the user may feel as though the air coming from the hand dryer isn't actually warm, hence seeming like they "take forever to heat up," while in reality the water evaporating from the user's wet hands absorbs heat energy from them, as well as the heated air, as {{w|evaporation}} is an endothermic process. Thus, the user does not ''feel'' that the air from the dryer is warm, even though it is, and will only start to do so once their hands have been significantly dried. Interestingly, this absorption of heat through evaporation is how human {{w|sweat}} has its cooling effect, which means that even warm ambient air can be made to feel colder by being wafted across a person's skin. | ||
− | Randall | + | Randall has apparently procured a small airplane, accompanied by a banner with a message explaining this phenomenon. He elaborates in the caption that he's spent dozens of years feeling angered with the engineers of these hand dryers, as he was under the comic's erroneous impression that the air from the dryers was not actually warm. In a presumable act of justice for hand dryer engineers everywhere, he now considers it his personal mission to explain to the public why this is actually a misconception. And indeed, it seems to be working - a person on the ground has already been [[1053: Ten Thousand|enlightened]] by Randall. |
− | + | In the title text, the {{w|speed of sound}} is the speed of a sound wave{{citation needed}} in a given medium, usually air. Breaking the {{w|sound barrier}} is often touted as a significant achievement for powered aircraft (this was first safely achieved in the 1940s, and became significantly 'easier' with the development of the jet engine). Here, Randall thinks it would be a good idea to try and get the {{w|Dyson (company)|Dyson company}} (a technology company known for making high-tech, fancy, and expensive air-moving devices such as vacuum-cleaners, fans and hand dryers) to design a hand dryer whose airflow would break this sound barrier. This would probably not be possible to achieve with such a relatively small device as a hand dryer, nor would such a hand dryer really be practically useful, given that air currents faster than the speed of sound would probably injure the hands of the dryer's users{{citation needed}}, among other unintended effects. | |
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− | In the title text, the {{w|speed of sound}} is the speed of a sound wave in a given medium, usually air. Breaking the {{w|sound barrier}} is often touted as a significant achievement for powered aircraft (this was first safely achieved in the 1940s, and became significantly 'easier' with the development of the jet engine). Here, Randall thinks it would be a good idea to try and get the {{w|Dyson (company)|Dyson company}} (a technology company known for making high-tech and expensive air-moving devices) to design a hand dryer whose airflow would | ||
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==Transcript== | ==Transcript== | ||
+ | {{incomplete transcript|Do NOT delete this tag too soon.}} | ||
:[An airplane tows a banner. In the distance, there are three small clouds and three birds] | :[An airplane tows a banner. In the distance, there are three small clouds and three birds] |