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Iron roof, glass walls, burn...

Iron roof, glass walls, burns and burns and never falls. What am I?

Correct answers: 37

The first user who solved this task is H Tav.

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A woman can always tell if

A woman can always tell if a man loves her by how much time he’s willing to invest. Money spent is meaningless, but time spent is priceless.

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Robert Sanderson Mulliken

Died 31 Oct 1986 at age 90 (born 7 Jun 1896). American chemist and physicist who received the 1966 Nobel Prize for Chemistry for “fundamental work concerning chemical bonds and the electronic structure of molecules.”In 1922, he first suggested a method of isotope separation by evaporative centrifuging. Thereafter, most of his research career was concerned with the interpretation of molecular spectra and with the application of quantum theory to the electronic states of molecules. With Friedrich Hund, he developed the molecular-orbital theory of chemical bonding, based on the idea that atomic orbitals of isolated atoms become molecular orbitals, extending over two or more atoms in the molecule. He also made major contributions to the theory and interpretation of molecular spectra.

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