Heat Collection (#6)

Reading Invisible Ink
Invisible ink may be detected by chemicals or heat

Warming Kettle by Fire
Keeping the water hot in a metal kettle by keeping it next to a hot coal fire on a long trivet

March to Baghdad 1917
British troops on the long march through torrid heat to Baghdad, the Ottoman Empires southern capital, which was taken in March 1917

Showgirl Miss Florence
Miss Florence of the Casino de Paris strikes a pose in the heat of the suns rays

Surya the Sun-God
The Hindu deity Surya is an archetypal sun-god, traversing the heavens in his chariot and overpowering his enemies with the heat of his rays

Pyne - Watering Cart
A WATERING CART - Whoever has experienced the misery of dust upon a highway crouded with carriages in the heat of summer, must acknowledge the utility of the watering cart

Buffon Experiment
BUFFON experiments with lenses, harnessing the heat of the sun to set fire to a distant tree

Changing Seasons
As the Earth circles the sun, different parts of it receive the suns heat, which is why we sunbathe in summer and shiver in winter

C16 Alchemists
An alchemist and his assistant heat the substances whose essence will collect in the flasks at the top of the apparatus, shedding impurities as they rise up the column

Alchemists Lab
An alchemist works at his furnace while his assistant feels the heat

Archimedes demonstrating reflecting mirrors
Archimedes, Greek mathematician and inventor, demonstrating the use of reflecting mirrors to set fire to enemy ships

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