Amazing fact about the invention of the lighter
The cigarette lighter was invented before the match.
- Home
- How does a smartphone compass work?
“Smartphones have a tiny sensor called a magnetometer that measures Earth's magnetic field to work as a digital compass.”
Reference: Encyclopaedia Britannica
More from this shelf
Where was the compass invented?
The first compasses were made in ancient China from lodestone, a naturally magnetic rock, and were used for fortune-telling and feng shui before navigation.
What was the first smartphone?
The IBM Simon, released in 1994, is considered the first smartphone.