火有沒有重量？
回答 (5)
2011-02-23 2:19 am
✔ 最佳答案
火,學者定義為現象,所以沒有重量。但撇除這個定義,我認為火本身是有重量的,舉例:我看見一團火,因為它正釋出光與能量;但是有沒有發現火本身可以帶有不同火焰顏色的?當燃燒過程中物質帶有不同元素,所釋放出的粒子與離子會令火焰帶不同顏色,橙橙黃黃的是不是一團火?綠綠藍藍的也是不是一團火?我們所說的火之現象不能劃分開火團內正在產生之粒子或化合物,這些可以說是火的天然元素,我亦從來也沒聽過火是經過濾後之現象。基於粒子及化合物帶有質量,我們亦不能說火不含這些物質,所以我覺得火有重量這個說法是成立的。
參考: 愚見
2011-02-22 10:12 am
shouldn't a fire be considered as a ball of plasma?
without matter, there'd be no fire; all matter has mass (weight), so...
without matter, there'd be no fire; all matter has mass (weight), so...
2011-02-22 12:03 am
無.....................................
2011-02-21 3:23 am
火 是一種現象.不是物質,所以沒有重量.
2011-02-21 1:17 am
No. "Fire" generally refers to the heat and (visible) light that are observed during the burning. of a substance. That is to say, it is the energy emitted by a chemical reaction. Since energy doesn't have mass, "fire" doesn't possess any weight.
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