Visit Your Local PBS Station PBS Home PBS Home Programs A-Z TV Schedules Watch Video Support PBS Shop PBS Search PBS
 
 
JOHANNES KEPLER
JOHANNES KEPLER
Germany (1571 - 1630)
Johannes Kepler was a German mathematician, astronomer and astrologer, and key figure in the 17th century astronomical revolution. He is best known for his eponymous laws of planetary motion, codified by later astronomers based on his works Astronomia nova, Harmonices Mundi, and Epitome of Copernican Astronomy.
 

Disfrute estos perspicaces y educacionales videoclips obtenidos de más de 70 horas de entrevistas con las más notables figuras en astronomía tomadas durante la filmación del documental 400 Años del Telescopio.

Busque en el catálogo IR A     VER TODO     Mostrar 5 10 25 videos.

Encontrar videos por nombre

Trudy Bell

Franhoffer and the refracting telescope
Trudy Bell - Writer

Franhoffer was very interested in optics from a very young age, apprenticed to a spectacle-maker, and then went on because he wanted to make the largest telescopes in the world, and the best telescopes in the world, and he did.

PLAY VIDEO | VIEW TRANSCRIPT

Trudy Bell

Early single lens telescopes and the achromatic problem
Trudy Bell - Writer

The main problem with using a single lens as Hoegens and Galileo and the early people was that it acted like a prism, so you ended up getting fringes of color around any object that you were looking at at a distance, particularly bright objects like stars.

PLAY VIDEO | VIEW TRANSCRIPT

Trudy Bell

Why I became interested in astronomy
Trudy Bell - Writer

I just became so fascinated with these megapieces of engineering, and all the people who had their hearts broken by them and had their reputations made by them, it’s so much a human story, as much as anything else, and they’re so beautiful, these instruments are just works of art.

PLAY VIDEO | VIEW TRANSCRIPT

Trudy Bell

William Herschel's large reflector telescopes
Trudy Bell - Writer

in the late 18th century you had William Herschel in England with his 20-foot telescope, and 40-foot telescope with a Herschelian focus.

PLAY VIDEO | VIEW TRANSCRIPT

Butler Burton

Electromagnetic spectrum
Butler Burton - NRAO, Green Bank

The electromagnetic spectrum includes the very short wavelengths, very high energetic waves. Gamma rays, x-rays, ultraviolet waves. Visible waves, the only ones we can see with our eyes. Infrared. Then the radio are the very long waves, stretching from a few millimeters out to many, many meters.

PLAY VIDEO | VIEW TRANSCRIPT

« 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 »

La Película | Video | Para Maestros | Guía de Programación | Noticias | Programa Planetario
Boletín | Calendario IYA | Recursos | Glosario | Contáctenos | Mapa del Sitio

© 2009 Interstellar Studios. All rights reserved.