Humphry Davy technically was the inventor of the light bulb, in 1801, but he used platinum as a filament. This meant that it didn't light bright enough for to be useful as a commercial product.

It wasn't until 1880 that Thomas Edison used a longer lasting filament bringing the product into the commercial market.

Some … Read more

Actually it's:

Pi = 3.1415926535 8979323846 2643383279 5028841971 6939937510 5820974944 5923078164 0628620899 8628034825 3421170679 8214808651 3282306647 0938446095 5058223172 5359408128 4811174502 8410270193 8521105559 6446229489 5493038196 4428810975 6659334461 2847564823 3786783165 2712019091 4564856692 3460348610 4543266482 1339360726 0249141273 7245870066 0631558817 4881520920 9628292540 9171536436 7892590360 0113305305 … Read more

Leonardo Da Vinci sketched helicopters, so technically it wasn't an aeroplane... But you also asked who invented the first flying machines, and you don't have to physically build something to have invented it. There were tests to see if Da Vinci's helicopter plans would have been successful, and he was close but not perfect... So … Read more