Fax
device · 1843 · Industrial Revolution
Transmitting images over wires (Bain; telefax in the 1960s).
What it is made of
- Document scanner bar — has part. It reads the sheet line by line.
- Modem — has part. It transmits an image over a telephone line.
- Thermal print head — has part. It prints the received image.
- Paper feed rollers — has part. Rollers feed the sheet.
Principles and materials it uses
- Telephone — uses. Transmission over a telephone line.
- Photodiode — uses. Scanning with a photocell.
- Copper — is made of. Bain’s fax has copper contacts and wires.
- Electrochemical reaction — uses. The paper darkened under current.