Violin bow e Máquina CNC: o que têm em comum
- Passo 1. Violin bow — faz parte de — Violin. The friction of horsehair excites the string.
- Passo 2. Violin — utiliza — String vibration. Vibrating strings.
- Passo 3. String vibration — é utilizado em — Piano. Strings.
- Passo 4. Piano — inclui — Player piano. A piano.
- Passo 5. Player piano — utiliza — Program control of a machine. The tune is recorded on a perforated roll.
- Passo 6. Program control of a machine — é utilizado em — Máquina CNC. The tool’s movement is set by a program — at first on punched tape.