The earliest microscopes were called flea glasses because they were predominantly used to observe small insects such as fleas!
Fact Lab
It’s fascinating that the largest animal ever to have lived on earth, the blue whale, feeds on nothing but krill, shrimp-like creatures that are among the smallest sea-dwellers. But it takes 36 metric tons of krill a day to allay an adult blue whale’s hunger. That’s the weight of 25 cars!
The earliest microscopes were called flea glasses because they were predominantly used to observe small insects such as fleas! These microscopes were simple in construction, using different shapes and sizes of glass with low power (6x to 10x). They were invented by the Romans.
In the narrow-minded USA of the 1800s, Valentine’s Day was considered an obscenity. The Chicago Post Office even rejected 25,000 Valentine’s cards because they were deemed indecent!
Fact Lab
It’s fascinating that the largest animal ever to have lived on earth, the blue whale, feeds on nothing but krill, shrimp-like creatures that are among the smallest sea-dwellers. But it takes 36 metric tons of krill a day to allay an adult blue whale’s hunger. That’s the weight of 25 cars!
The earliest microscopes were called flea glasses because they were predominantly used to observe small insects such as fleas! These microscopes were simple in construction, using different shapes and sizes of glass with low power (6x to 10x). They were invented by the Romans.
In the narrow-minded USA of the 1800s, Valentine’s Day was considered an obscenity. The Chicago Post Office even rejected 25,000 Valentine’s cards because they were deemed indecent!
Caffeinated Butterfingers were once also candy bars! In 2009, Butterfinger debuted Butterfinger Buzz, a candy bar which contained 80 milligrams of caffeine (the equivalent of a can of Red Bull). That would have sent your head into a spin! But the product was discontinued because it wasn’t popular.
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