物理 光學問題

理論上,單色光比多色光(例如陽光)的集中性和能量也比較大,常見的而能量最大分別是鐳(鐳射)和激光的能量和破壞性最大,但激光比較亮(因為是單色光,即光只能折射一種顏色,光比較集中),所以激光能量最大和最亮 (常見的光子中)。

2008-10-11 14:00:23 補充：
Is it wrong, I only 14 years old

002 WHAT ARE YOU TALKING ABOUT IT ?

在可見光範圍內,那種光的光子能量最大?

Those photons with the shortest wavelength (i.e. highest frequency) have the higest energy.

For the visible light range, violet light photons have the shortest wavelength (about 400 nm), hence they have the highest energy.

想想看,,,這種光是否一定最亮 ? 為什麼 ?

No. The brightness, or the intensity, of light depends on the number of photons reaching your eyes. Thus, violet light may not be brighter than red light (which has lower energy photons due to its long wavelength) if the number of red light photons is more abundant than the number of violet light photons.