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It was the first calculator. It was made out of wood, wire, and beads. IT could be used for addition, subtraction, multiplication, and division.
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Emperor Nero killed his wife and put her head on a plate. Then he gave it to his mistress who knew who it was due to two discolored front teeth.
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The Chinese invented gunpowder on accident. They were trying to find a potion for immortality. So instead they wound up making an explosion.
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Gunpowder was used to fire clay pellets from thick bamboo. So it worked like a gun. Later on the bamboo was replaced by bronze and the clay was replaced by iron balls.
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Roger Bacon wrote the first mention of the composition of gunpowder in Europe.
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There is a Chinese book called Hsi Duan Yu. It describes how to tell the difference between a drowned victim from someone who has been strangled. It also mentioned a stabbing victim. The murder was solved by flies that were attracted to the blood on the killer's sickle.
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The earliest known use of blood spatter evidence used in a trial was in 1514. The defendant was put in jail for heresy and then convicted of suicide.
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Rifling appears in firearms. Rifling is the arrangement of spiral grooves on the inside of a rifle barrel. It causes a spin on the bullet as it travels through the barrel.
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An Italian man noticed the patterns on our fingers. Which we use now-a-days to help solve murders and other crimes. Marcello was referred to as the " Father of microscopical anatomy, histology, and physiology."
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The analysis of a blowfly infestation on rotting meat allowed Francesco Redi to refute the hypothesis of " spontaneous generation" of maggots. So now because of that we can use maggots to help determine when the victim died.
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This is when the very first high-powdered microscope was constructed. The maker of the invention's name is Anton Van Leeuwenhoek. He was a Dutch businessman, scientist, and one of the notable representatives of the Golden Age of Dutch science and technology.
