{"id":102,"date":"2026-10-17T15:47:38","date_gmt":"2026-10-17T13:47:38","guid":{"rendered":"https:\/\/nbozov.com\/?page_id=102"},"modified":"2026-10-18T20:59:45","modified_gmt":"2026-10-18T18:59:45","slug":"did-you-know","status":"publish","type":"page","link":"http:\/\/nbozov.com\/index.php\/did-you-know\/","title":{"rendered":"Did you know"},"content":{"rendered":"\n
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Photons<\/h2>\n\n
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It can take a photon 40 000 years to travel from the core of the sun to its surface, but only 8 minutes to travel the rest of the way to Earth.<\/p>\n\n\n\n
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Nikola Tesla’s birth<\/h2>\n\n
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There was a fierce storm that raged over the town on the night Nikola Tesla was born. It was told it is a bad omen to which Tesla\u2019s mother replied: \u201cNo. He will be a child of light.\u201d<\/p>\n<\/div><\/div><\/div>\n\n<\/li>
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Planets<\/h2>\n\n
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Uranus is the only planet in our solar system that rolls on its side like a barrel, while Venus is the only planet that spins in the opposite direction to Earth.<\/p>\n<\/div><\/div><\/div>\n\n<\/li>
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The first robot<\/h2>\n\n
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The first known robot to be built was a steam-powered “pigeon”, created around 400 to 350 BCE by the ancient Greek mathematician Archytas.<\/p>\n\n\n\n
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Radio waves<\/h2>\n\n
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Radio waves are a form of electromagnetic radiation \u2013 the same phenomenon as light, X-rays and various other types of radiation, but with much longer wavelengths. They travel at the speed of light 300 000 km\/second.<\/p>\n<\/div><\/div><\/div>\n\n<\/li>
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Everage cloud’s weight<\/h2>\n\n
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Researchers have calculated that the average cumulus cloud you see on a sunny day – weighs an incredible 500 000 kg<\/p>\n\n\n\n
![\"\"](\"http:\/\/nbozov.com\/wp-content\/uploads\/2026\/10\/photon.png\")
<\/figure>\n\n\n\n![\"\"](\"http:\/\/nbozov.com\/wp-content\/uploads\/2026\/10\/tesla.png\")
<\/figure>\n\n\n\n![\"\"](\"http:\/\/nbozov.com\/wp-content\/uploads\/2026\/10\/uranus_venus.png\")
<\/figure>\n\n\n\n![\"\"](\"http:\/\/nbozov.com\/wp-content\/uploads\/2026\/10\/first_robot.png\")
<\/figure>\n\n\n\n![\"\"](\"http:\/\/nbozov.com\/wp-content\/uploads\/2026\/10\/radio_waves.png\")
<\/figure>\n\n\n\n![\"Everage](\"http:\/\/nbozov.com\/wp-content\/uploads\/2026\/10\/cloud_weight.png\")
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