"A friend gave me a pair of Hamamatsu ph…

"A friend gave me a pair of Hamamatsu photomultiplier tubes (PMTs)."Building the Beam Universe Splitter I: A Quantum Magic 8-Bal https://dnhkng.github.io/posts/building-the-beam-universe-splitter/#the-quantum-magic-8-ball ふいに浜松ホトニクス