Rearview Mirror Tab
If you drive, looking in your rearview mirror is something you most likely do regularly. However, have you noticed the tab located at the mirror’s bottom? You can use the tab to change the mirror’s position to avoid being blinded by headlights from behind. Even though it deflects the light, it still lets you see the things happening behind your car!
Coin Ridges
The edges of quarters and dimes are rough while those of pennies and nickels are not because coins were once stamped in different weights to indicate the coin’s value. People used to shave the coins’ edges and melted them to make new coins. They wanted to stop this, so they added precious metals in ridges of coins.