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1723 in science |
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The year 1723 in science and technology involved some significant events.
Daniel Gabriel Fahrenheit FRS was a physicist, inventor, and scientific instrument maker, born in Poland to a family of German extraction. Fahrenheit invented thermometers accurate and consistent enough to allow the comparison of temperature measurements between different observers using different instruments. Fahrenheit is also credited with inventing mercury-in-glass thermometers more accurate and superior to spirit-filled thermometers at the time. The popularity of his thermometers led to the widespread adoption of his Fahrenheit scale attached to his instruments.
Frederick William Herschel was a German-British astronomer and composer. He frequently collaborated with his younger sister and fellow astronomer Caroline Herschel. Born in the Electorate of Hanover, William Herschel followed his father into the military band of Hanover, before emigrating to Great Britain in 1757 at the age of nineteen.
1650 (MDCL) was a common year starting on Saturday of the Gregorian calendar and a common year starting on Tuesday of the Julian calendar, the 1650th year of the Common Era (CE) and Anno Domini (AD) designations, the 650th year of the 2nd millennium, the 50th year of the 17th century, and the 1st year of the 1650s decade. As of the start of 1650, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.
1784 (MDCCLXXXIV) was a leap year starting on Thursday of the Gregorian calendar and a leap year starting on Monday of the Julian calendar, the 1784th year of the Common Era (CE) and Anno Domini (AD) designations, the 784th year of the 2nd millennium, the 84th year of the 18th century, and the 5th year of the 1780s decade. As of the start of 1784, the Gregorian calendar was 11 days ahead of the Julian calendar, which remained in localized use until 1923.
John Couch Adams was a British mathematician and astronomer. He was born in Laneast, near Launceston, Cornwall, and died in Cambridge.
John Michell was an English natural philosopher and clergyman who provided pioneering insights into a wide range of scientific fields including astronomy, geology, optics, and gravitation. Considered "one of the greatest unsung scientists of all time", he is the first person known to have proposed the existence of stellar bodies comparable to black holes, and the first to have suggested that earthquakes travelled in (seismic) waves. Recognizing that double stars were a product of mutual gravitation, he was the first to apply statistics to the study of the cosmos. He invented an apparatus to measure the mass of the Earth, and explained how to manufacture an artificial magnet. He has been called the father both of seismology and of magnetometry.
The year 1821 in science and technology involved some significant events, listed below.
The year 1775 in science and technology involved some significant events.
The year 1802 in science and technology involved some significant events, listed below.
The year 1788 in science and technology involved some significant events.
The year 1784 in science and technology involved some significant events.
The year 1710 in science and technology involved some significant events.
George Graham, FRS was an English clockmaker, inventor, and geophysicist, and a Fellow of the Royal Society.
John Goodricke FRS was an English amateur astronomer. He is best known for his observations of the variable star Algol in 1782.
Johann Rudolf Wolf was a Swiss astronomer and mathematician best known for his research on sunspots.
Claudius Amyand was a French surgeon who performed the first recorded successful appendectomy.
A seconds pendulum is a pendulum whose period is precisely two seconds; one second for a swing in one direction and one second for the return swing, a frequency of 0.5 Hz.
Colin Campbell was a Scottish astronomer.
Samuel Dunn (1723–1794) was a British mathematician, teacher, cartographer and amateur astronomer.
Edward Pigott (1753–1825) was an English astronomer notable for being one of the founders of the study of variable stars.