腦袋裡出來的波
兩個意思都從同一個複合字長出來，一個是儀器上的實物，一個是把那個畫面拿來形容突然出現的念頭。
noun · B2
One of the regular electrical signals that the brain makes, which a machine can measure and draw as a moving line.
腦波
核心畫面
One way to hold the word: a wave coming out of the head. On a screen it is a real line, rising and falling as the brain works, and a machine can catch it through the skin. Away from the machine, the same picture is doing lighter work: an idea that arrives the way a wave arrives — not built up piece by piece, just suddenly there.
可以想成一道從腦袋裡出來的波。在螢幕上它是一條真的線，隨著大腦運作上下起伏，機器隔著頭皮就收得到。離開機器以後，同一…更多收起
可以想成一道從腦袋裡出來的波。在螢幕上它是一條真的線，隨著大腦運作上下起伏，機器隔著頭皮就收得到。離開機器以後，同一個畫面換了個輕鬆的工作：一個念頭像浪一樣打上來——不是一塊一塊堆出來的，它就是突然到了。From the word’s history
A transparent compound of brain and wave. Both senses are standing on the same two words; the difference is whether the wave is one you can measure or one you can only feel arriving.
這是一個看得穿的複合字：brain（大腦）＋ wave（波）。兩個意思踩的是同樣那兩個字，差別只在這道波是量得出來的，還是只感覺得到它來了。
Wiktionary (kaikki extract) brainwave: 'From brain + wave.' source_ref kaikki:3f6f69a190036ae4:1242133391
One branch