1.Eiffel tower: The 300m high Eiffel tower in Paris, was built in 1889. It was made wholly of iron. At the time it is the tallest manmade structure in the world.
2.Loudest sound: When the Satern V rocket blasted off, American scientist recorded a noice of 210 decibles, which is loudest sound ever measured.
3.First phone call: The first phone call took place between Alexander Bell (inventor) and his assistant Watson.
4.Weight on Moon: A person weighting 60 kg on the earth will weight only 10 kg on Moon.
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