March 25, 2025
A blank Etch A Sketch screen is entirely covered on the inside with aluminum powder and tiny beads, held using static charge. Lines are drawn on the toy by scraping off the powder and beads, allowing light to pass through the screen. Shaking the toy recoats the screen with powder, making it blank again.
Get One Good Fact delivered to your inbox every day.
-
Apr 21
Which huge nation has only one time zone? -
Apr 22
Why is a zero score in tennis called “love”? -
Apr 23
What country beat the U.S. to the Moon? -
Apr 24
What other mammal has a sense of rhythm? -
Apr 25
Which country produces the most oil? -
Apr 26
When did Europeans really arrive in North America? -
Apr 27
What’s the best-selling novel of all time? -
Apr 28
How did the Mona Lisa get so famous? -
Apr 29
Where is the world’s longest tunnel? -
Apr 30
What makes strawberries so unusual?
