Harwell site puzzle cache 5 Mystery Cache
Harwell site puzzle cache 5
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The cache is not at the listed coordinates.
You may assume N 51° and W 001°.
My first is a gas that was discovered independently by Carl Wilhelm Scheele and Joseph Priestley but Priestley published his work first and is thus given precedence. He gave it a different name from the one we use today but you will recognise most readily the one given by Lavoisier.
My second is common in meteorites but was discovered by Axel Cronstedt in Sweden and is commonly used nowadays in stainless steel.
My third is also a gas and has the second lowest density of all elements. Coupled with an almost inert nature, it is often used to fill balloons for children's parties.
My fourth was discovered by Jedzrej Sniadecki when investigating platinum ores. It is one of the rarest of metals on Earth and used in catalytic converters. The name of this element is derived from the Latin name for Russia.
My fifth is easily produced by heating its most common ore and has fascinated man throughout millennia by being the only metal that is liquid at room temperature. Once commonly used in thermometers, this is now discouraged due to its toxic nature.
My sixth was discovered jointly by two very well-known names in science, Gustav Kirchhoff and Robert Bunsen. It's name comes from the Latin for sky blue, the colour produced when it is burnt in a flame, and it is used in some of the most accurate clocks we can build.
My seventh was first isolated by Friedrich Stromeyer. It is a very toxic substance and was used extensively in rechargeable batteries, although alternative materials are now available. Another use is in control rods for nuclear reactors.
My eighth was discovered by Joseph Black. It is used to make lightweight alloys for bicycles and suitcases. I remember burning pieces of this material at school and seeing the same bright light that some street lights display.
My ninth was first isolated by Jean Charles Galissard de Marignac in 1878 but a pure sample was obtained only in 1953. Named after a town in Sweden, this element has virtually no industrial use.
My tenth and last was extracted by Louis-Josef Gay-Lussac and Louis-Jacques Thénard working in Paris, and Sir Humphry Davy in London. However, pure samples were not isolated until much later. Compounds of this element are widely used in glass (Pyrex), detergents and a cleansing flux for soldering. It produces a distinctive green colour in flares and fireworks.
Additional Hints
(Decrypt)
Oyhr, unatvat nobhg 3 srrg uvtu.
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