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GALLIUM: A METAL IN LIQUID STATE AT ROOM TEMPERATURE

GALLIUM: A METAL IN LIQUID STATE AT ROOM TEMPERATURE

        Gallium is a chemical element with the symbol Ga and atomic number 31.   periodic table Elemental gallium is a soft, silvery metal at standard temperature and pressure; however in its liquid state it becomes silvery white. It is in group 13 of the...

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Longest Floating Bridge

Longest Floating Bridge

This Multi Span Suspension Bridge is in very deep water in Norway. Deep water means the foundations are very expensive. So it stands on floating pontoons which are tethered to the seabed and held down - so pulled down against buoyancy forces. In order to make it...

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Pythagoras theorem

Pythagoras theorem

We know that the square of hypotenuse in a right-angled triangle is equal to the sum of the squares of the other two sides. This is Pythagoras theorem and there are many ways of proving this. The video below proves it in a novel way!

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Picture of Saturn’s moons in alignment

Picture of Saturn’s moons in alignment

NASA's Cassini satellite has spent in the orbit of Saturn for over a decade and has taken many photos of Saturn and its moons and this is the pic of its moons coming into perfect alignment.

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