Fireworks & Explosives like Granddad used to make by Kurt. Saxon

By Kurt. Saxon

Through the writer of "The terrible Man's James Bond", Grandpa Used To Make includes excerpts from flip of the century books on Pyrotechny similar themes. Paperback, sixty one pages.

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Sample text

Oxygen levels have fluctuated since the air became oxygen rich, but not by much. In addition, today's proportion of atmospheric oxygen is large enough to support the formation of the ozone layer in the stratosphere, which protects life from the worst of the sun's harmful ultraviolet rays. Ozone is a UV-absorbing form of pure oxygen in 37 which the atoms are joined not in pairs, as in oxygen gas, but in triplets. How is atmospheric oxygen kept at such a steady level? It is created, as we have seen, during photosynthesis, when organisms strip oxygen from water molecules.

The greatest rewards come from gold; by gold love is won; by gold is faith destroyed; by gold is justice bought; the law follows the track of gold, while modesty will soon follow it when law is gone. It was a common theme in classical times, when men were lauded if they disdained riches and condemned if they coveted them. Socrates had a reputation for rising above the scramble for worldly wealth - he allegedly refused the gold offered by his rich pupil Aristippus. Inspired by this example, Aristippus once instructed his slaves to throw away the gold that they could not easily carry during a long journey.

So the current proportion of 21 per cent achieves a good compromise. This constancy of the oxygen concentration in air lends support to the hypothesis that the biological and geological systems of the Earth conspire to adjust the atmosphere and environment so that they are well suited to sustain life - the so-called Gaia hypothesis. Oxygen levels have fluctuated since the air became oxygen rich, but not by much. In addition, today's proportion of atmospheric oxygen is large enough to support the formation of the ozone layer in the stratosphere, which protects life from the worst of the sun's harmful ultraviolet rays.

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