Fri, Jul 7, 2006 at 5:42 PM Apparently when I am writing this article I have confused the concept of frequency and wavelength. My assumption in that article is an object has a different vibrational at… 更多 →
eulerRandle Chen wrote 11 months ago: 樂器的發聲原理主要是共振。以管樂器為例,當樂器管內空氣柱振動的波長與管子的幾何結構成某些關係時,便會產生共振,發出樂音: 當空氣溫度改變時,空氣中聲波的速度也會隨之改變,有一經驗公式:(t: ℃)。然 … more →
Randle Chen wrote 11 months ago: 樂器的發聲原理主要是共振。以管樂器為例,當樂器管內空氣柱振動的波長與管子的幾何結構成某些關係時,便會產生共振,發出樂音: 當空氣溫度改變時,空氣中聲波的速度也會隨之改變,有一經驗公式:(t: ℃)。然 … more →
newnewhkcc1976 wrote 1 year ago: I remember that when I was studying in Secondary School, Physics taught me the formula which is E=mc … more →
newnewhkcc1976 wrote 1 year ago: (思想史:中三) 熱和涼是感覺,而冷和暖是溫度,一直以來都以為它們是指同一件事,因為天氣冷所以覺得寒,因為天氣暖所以覺得熱。直至後來有一次,翻開了高等物理的課本,才發覺當風在動時,代表空氣粒子動能增加 … more →
eulertruthbible wrote 1 year ago: Fri, Jul 7, 2006 at 5:42 PM Apparently when I am writing this article I have confused the concept of … more →
eulertruthbible wrote 1 year ago: Wed, Apr 19, 2006 at 9:48 AM Since we know the essential of heat/thermal energy is the transferring … more →