English clockmaker Daniel Quare gained the patents for a portable barometer to measure air pressure.
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Researchers in South Korea developed a tattoo that monitors a person's health.
A bomb exploded at the railway station in Bologna, Italy.
Andrew Hallidie introduced the cable car to San Francisco after witnessing a horse and carriage accident.
English sea explorer Henry Hudson reached the Hudson Bay, which was named after him.
Adolf Hitler became Führer of Germany following the death of President Paul von Hindenburg.
