The earliest microscopes were called flea glasses because they were predominantly used to observe small insects such as fleas!
Fact Lab
Women are able to perceive reds and oranges better than men. The ability to see red is attached to the X chromosome and women have two X chromosomes, allowing them to perceive the red-orange spectrum better.
Did you know that the Yakuza actually got their name from the worst hand of cards (or at least the traditional Japanese version) ever dealt? Ya 8 + Ku 9 + Za 3. It essentially translates to ‘good-for-nothing.’ The more you know!
A dog’s sense of smell is simply amazing: Our canine friends can smell a teaspoon of sugar dissolved in two Olympic swimming pools. That’s thanks to the 300 million olfactory receptors in their noses – humans have a measly six million...
Fact Lab
Women are able to perceive reds and oranges better than men. The ability to see red is attached to the X chromosome and women have two X chromosomes, allowing them to perceive the red-orange spectrum better.
Did you know that the Yakuza actually got their name from the worst hand of cards (or at least the traditional Japanese version) ever dealt? Ya 8 + Ku 9 + Za 3. It essentially translates to ‘good-for-nothing.’ The more you know!
A dog’s sense of smell is simply amazing: Our canine friends can smell a teaspoon of sugar dissolved in two Olympic swimming pools. That’s thanks to the 300 million olfactory receptors in their noses – humans have a measly six million...
The smallest sample that can be clearly observed under a light microscope is a 500 nanometer long object. It is possible to observe smaller objects than this, but their features might be distorted. Anything smaller than 500 nanometers loses detail because of the wave nature of light.
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