What is Light? - Cosmic Questions with Spaceman Steve

Описание: What is light? What can astronomers do with it? Spaceman Steve celebrates the international day of light by explaining the fundamental nature of light rays and exploring the different types of light we can observe.

International day of light is celebrated on May 16th, the anniversary of the first successful operation of a laser in 1960 by Theodore Maiman.

Aloha!

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Image credits:

Unless otherwise stated, the images are from the public domain and do not require attribution (Accessed via pixabay, Wikimedia Commons, or NASA)

00:00 Prism, Sceptre+Derivative work from Suidroot. Via Wikimedia Commons (CC 1.0)
00:04, 00:13 The James Clerk Maxwell Telescope (JCMT) - JCMT operator Kevin Silva
00:05 The black hole at the centre of M87 (Pōwehi) - The Event Horizon Telescope Collaboration, https://eventhorizontelescope.org/
00:19 The VLT G. Hüdepohl, European Southern Observatory (CC 4.0)
01:50 Albert Einstein Colorized - Flikr - DonkeyHotey (CC 2.0)
04:00 Magnetic Field Generated by Electric Current - Created by Wapcaplet using Blender and the GIMP - Modified with the words “Magnetic Field” and “Electric Current” weather than “B” and “I” (CC 3.0)
04:14, 05:44 Electric current, compasses - Exploratorium Teacher Institute (CC 4.0)
05:19 Maxwell’s equations - YassineMrabet via Wikimedia Commons (CC 1.0)
05:50 Induction of current via magnetic field - Kieran Mckenzie - via tenor.com
05:55 Electromagnetic Wave - And1mu - via Wikimedia Commons (CC 4.0)
06:56, 07:17 Alberto - Stefan Binnewies/Josef Pöpsel/Capella Observatory - fair use
07:01 Alberio Sky map: waloszek.de
07:37 Electromagnetic spectrum - Philip Ronan, Gringer via Wikimedia Commona - Cropped original (CC 3.0)
07:57 X-ray of broken wrist. Pavel Ševela via Wikimedia Commons (CC 4.0)
08:02 Hulk Up Close and Personal - Ken Banks, via Flickr, (CC 2.0)
08:16 Mauna Kea Observatories Support Services (MKSS)
08:37 Orion in visible and infrared light - Encyclopedia Britannica - Visible (Akira Fujii), Infrared (IRAS, NASA)
09:20 Planck Mission Team/NASA/ESA

Licensing:

CC 1.0: https://creativecommons.org/licenses/...
CC 2.0: https://creativecommons.org/licenses/...
CC 3.0: https://creativecommons.org/licenses/...
CC 4.0: https://creativecommons.org/licenses/...


Sound Credit:

Music: Paper Bag - Clear Call, Via Epidemic Sound
Angelic Choir: HQSFX, via Youtube