原文係英文
A pot of water containing chickens is heated over a high flame until it boils . A low flame is then used to keep the soup boiling for 3 hours.
Q: Explain why the temperature of the boiling soup remains unchanged , even though it is being heated.
點解當水煲熱左之後用細火都會令佢維持到個溫度?
2007-09-17 8:59 pm
回答 (3)
2007-09-17 9:25 pm
Because the soup has already reached its boiling point.
Likewise, no matter how long you heat up a pot of water, the temperature of the water would remain at 100 degrees Celcius, its boiling point.
2007-09-17 13:28:11 補充：
Sorry, should be Celsius, not Celcius.
Likewise, no matter how long you heat up a pot of water, the temperature of the water would remain at 100 degrees Celcius, its boiling point.
2007-09-17 13:28:11 補充：
Sorry, should be Celsius, not Celcius.
2007-09-17 9:20 pm
因為個煲係會保住d温度,通常煲係銀色的,你平時見到d煲有d係黑色,其實只是加上一層黑色的物質,入面個層都係銀色的.
銀色有一特性,就係吸熱慢,散熱亦慢,不像黑色雖然吸熱快,但散熱亦快,因此煲是銀色的,目的是保持水煲的温度.
煲水時一旦個煲熱了,再用慢火,仍然d温度會keep住,唔會咁快散架!
銀色有一特性,就係吸熱慢,散熱亦慢,不像黑色雖然吸熱快,但散熱亦快,因此煲是銀色的,目的是保持水煲的温度.
煲水時一旦個煲熱了,再用慢火,仍然d温度會keep住,唔會咁快散架!
2007-09-17 9:05 pm
Because it is already hot.
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https://hk.answers.yahoo.com/question/index?qid=20070917000051KK01024