
- I don't know Morse code.
- Oh, it's very simple. This is A.
The Big Bang Theory Season 2, Episode 6

using Morse code?
The Big Bang Theory Season 7, Episode 1

Should've been about
Samuel Morse
The Big Bang Theory Season 11, Episode 8

Samuel Morse. You kill me.
The Big Bang Theory Season 11, Episode 8

- What are you doing?
SHELDON: It's Morse code.
The Big Bang Theory Season 2, Episode 6