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| {{Point|When room temperature is high, negative feedback inhibits heater (function).}}
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| [[メディア:heater-summer.mp4|動画と音声での説明]]<br>
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| [[ファイル:HeaterSummerBeforeFeedback.jpg|left|500px]]
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| ① Let's say, summer came. Room temperature becomes high due to the summer heat. A Heater raises room temperature. These are in the <font color="#ff0000">same direction (red)</font>.
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| [[ファイル:HeaterSummerAfterFeedback.jpg|left|500px]]
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| ② Since these are in the <font color="#ff0000">same direction</font>, negative feedback <font color="#00f">inhibits (blue)</font> the heater (function, such as by turning the power off). Because of this, the room temperature-raising effect of the heater weakens, and the rise in room temperature (red upward unfilled arrow) fades away (high room temperature lowers to the original room temperature).
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| This simply says, when the room temperature is high (during summer), heaters are not used.
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| {{QuizTitle}}
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| <GIFT>
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| //LEVEL:3
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| //RAND
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| Due to the summer heat, room temperature becomes {~=high~low}, and a heater {~=raises~lowers} room temperature.
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| Because these are in {~=same direction~opposite direction}, negative feedback {~=inhibits~facilitates} the heater (function).
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| //LEVEL:2
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| //RAND
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| When room temperature is high, negative feedback {~=inhibits~facilitates} heater (function).
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| </GIFT>
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