May 14, 2019
Peder Horrebow –Scientist of the Day
Peder Horrebow, a Danish astronomer, was born May 14, 1679.
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Peder Horrebow –Scientist of the Day
Peder Horrebow, a Danish astronomer, was born May 14, 1679.
read more...
Ole Rømer – Scientist of the Day
Ole Rømer, a Danish astronomer, was born on Sep. 25, 1644.
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Ole Rømer was born on September 25, 1644. A Danish astronomer who, in 1676, made the first measurement of the speed of light. Rømer also invented the modern thermometer showing the temperature between two fixed points, namely the points at which water respectively boils and freezes. Rømer developed one of the first temperature scales while convalescing from a broken leg. Daniel Gabriel Fahrenheit visited him in 1708 and altered the Rømer scale, the result being the familiar Fahrenheit temperature scale still in use today in a few countries. In addition to inventing the first street lights in Copenhagen, Rømer also invented the meridian circle, the altazimuth, and the passage instrument (also known as the transit instrument).
History Wednesday: Ole Rømer presents the first measurements for the speed of light (1676)
OTD in 1676, Ole Christensen Rømer made the first quantitative measurements of the speed of light, based on observations made by himsef and Cassini, of the eclipses of Jupiter’s moon Io, and the time it took for the light to reach Earth when Earth’s orbit was closer and further from Jupiter.
La determinación de la velocidad de la luz de Ole Rømer
La determinación de la velocidad de la luz de Ole Rømer
Google rinde homenaje al astrónomo danés Ole Rømer por el 340 aniversario del descubrimiento
La determinación de la velocidad de la luz fue cosa de Ole Rømer. El astrónomo no es un personaje conocido por el gran público, pero su nombre va unido a este gran descubrimiento científico sucedido hace 340 años. Google lo conmemora hoy con un gracioso doodle en tonos marrones en el que se puede ver al…
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Today is the 370th birthday of Ole Rømer, a Danish astronomer who conducted the first quantitative measurements of the speed of light. In honor of his achievement, you can try to figure out the speed of light at home using a ruler, a bar of chocolate and a microwave thanks to At-Bristol (above).
So, why does light slow down in the Earth's atmosphere (as indicated in the demonstration video, above)? Let MinutePhysics handle that.
Video: The Speed of Light in Glass
On October 5, 1644 (or according to the old julian calendar September 25), Danish astronomer Ole Christensen Rømer was born. He is best known for making the first quantitative measurements of the speed of light. [Read More]
Fammi diventare una stella fissa nel firmamento del tuo cielo.
_Ole Romer_