Johann Hommel
Encyclopedia
Johann Hommel was a German
astronomer
and mathematician
.
In 1552 or 1553, Richard Cantzlar introduced transversal
dot lines in graduations. It was a variant of the zigzag
line system introduced by Hommel. Tycho Brahe
obtained the zigzag line system from Hommel.
The crater Hommel
on the Moon
is named after him.
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...
astronomer
Astronomer
An astronomer is a scientist who studies celestial bodies such as planets, stars and galaxies.Historically, astronomy was more concerned with the classification and description of phenomena in the sky, while astrophysics attempted to explain these phenomena and the differences between them using...
and mathematician
Mathematician
A mathematician is a person whose primary area of study is the field of mathematics. Mathematicians are concerned with quantity, structure, space, and change....
.
In 1552 or 1553, Richard Cantzlar introduced transversal
Transversal
In geometry , when two coplanar lines exist such that a third coplanar line passes thru both lines. This third line is named the Transversal....
dot lines in graduations. It was a variant of the zigzag
Zigzag
A zigzag is a pattern made up of small corners at variable angles, though constant within the zigzag, tracing a path between two parallel lines; it can be described as both jagged and fairly regular....
line system introduced by Hommel. Tycho Brahe
Tycho Brahe
Tycho Brahe , born Tyge Ottesen Brahe, was a Danish nobleman known for his accurate and comprehensive astronomical and planetary observations...
obtained the zigzag line system from Hommel.
The crater Hommel
Hommel (crater)
Hommel is a lunar crater located in the southeast section of the Moon, in a region that is deeply impacted with a multitude of impact craters. The most notable craters nearby are Pitiscus to the north; Rosenberger due east; and Nearch to the southeast. The prominent crater Vlacq is nearly attached...
on the Moon
Moon
The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...
is named after him.