photon
US /ˈfoʊtɑ:n/
・UK /ˈfəʊtɒn/
B2 中高級
n.名詞光子；光量子
A photon is a piece of light
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【科學知識】「東西」究竟是什麼組成的？(What Is Something?)
05:34
- By exciting what's known as the electromagnetic field, a little kink is created which is the particle we call the photon.
當所謂的「電磁場」被激發，就會產生一個小小的「波動」，就是我們所說的「光子」。
貝爾定理。量子維恩圖悖論 (Bell's Theorem: The Quantum Venn Diagram Paradox)
17:35
- when a photon of light reaches the glass, it either passes through, or it doesn't.
偏振玻璃可以決定一道光是否可以通過它 (例如光欲從偏振玻璃左側到右側)
- And whether or not it passes through is effectively a measurement of whether that photon is polarized
而光是否能有效地通過測量(偏振玻璃) 和它在一個給定方向的極化有關
來自太空的死亡--伽馬射線爆發解釋 (Death From Space — Gamma-Ray Bursts Explained)
07:14
- A single gamma ray photon, is more energetic than a million visible photons combined.
一個伽瑪射線光子的能量比起一百萬個可見光子的能量總和還多！
2012諾貝爾獎,我們如何看到光(2012 Nobel Prize: How Do We See Light?)
02:35
- plus, if you "look" at a photon of light in the normal everyday way, that means your eye
另外，如果你用正常的日常方式看一個光子，那就意味著你的目
- This box is also so cold and dark that only occasionally will there even be one photon
這個盒子也是如此的冷酷和黑暗，甚至只有偶爾才會有一個光子
ꟼAЯƆ | CRAP Astronauts left on the Moon! ft. MinutePhysics - Smarter Every Day 73
05:59
- (Henry) Right. Experiments like monitoring the distance to the moon. If you count how long it takes a photon
(亨利) 對像監測到月球的距離這樣的實驗。如果你計算一個光子需要多長時間...
雷射激光到底怎麼運作的（How lasers work (in theory)）
01:42
- Once one of them spontaneously emits a photon, it'll stimulate some of the others to do so, and you get a nice cascade of illumination.
讓它們激發而足夠產生光。當其中一個原子自發地放產生一個光子,它會刺激其他原子一起產生,然後你就會得到一層好的光
- But why do the atoms emit light just because another photon passes by?
但是為什麼原子放出光僅僅只因為有光子通過? 這其實相當
【科學知識】什麼是「光」？不是你看得到的才叫光！ (What Is Light?)
04:39
- A photon, an elementary particle without a real size that can't be split, only created or destroyed.
光子是基本粒子，沒有真正的大小，也不能分裂，只能產生和消亡。