Su	Mo	Tu	We	Th	Fr	Sa
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29	30	1	2	3	4	5

BBC Revolutions - The Ideas that Changed the World: The Telescope (2019)

Posted By: notbanned

Date: 21 Aug 2019 13:54:47

1080p (FullHD) / HDTV

'The telescope gave us what might be the greatest discovery of all – the universe itself.' - Jim Al-Khalili

Jim Al-Khalili and a team of experts explore the fascinating story of one of our greatest inventions, the telescope, using original notebooks, stylish visualisations and sophisticated computer graphics. It is a tale full of twists and turns, involving a seashore plant, a New York property boom and a spilt bottle of mercury. Thanks to these events, the telescope allowed us to discover not just our place in the cosmos, but our origins too.

Jim travels to eighth-century Baghdad to witness the first experiments in optics. Many regard this as the birth of science itself, culminating in Ibn al-Haytham’s extraordinary book explaining how light can be manipulated.

In 12th-century Venice, a secret process using a seashore plant allows the manufacture of clear glass and with that, the first precision lenses. 250 years later a Dutch optician makes a chance observation: a particular arrangement of lenses magnifies distant objects. Months later, an Italian mathematics teacher, Galileo, constructs his own version and points it into the night sky. It is a revolution not just in astronomy but also in humanity’s perception of itself.

In Paris, an accident with mercury allows Louis Daguerre to make highly sensitive photographic plates. Now cameras are attached to telescopes allowing celestial images to be analysed with mathematical precision. Later, a New York property boom allows a wealthy donor to fund a full-sky survey. Working on this project, Henrietta Leavitt notices that some stars undergo regular changes in brightness, which allows astronomers to measure their distance from the Earth. Edwin Hubble, using Leavitt’s discovery, measures the vast distances of entire galaxies. Hubble also discovers that the universe is expanding, implying that before the Big Bang, it must all have been in the same place.

With the Hubble Space Telescope, we have reached the limits of our vision, but a new generation of telescope is about to be launched. The James Webb Space Telescope will see as far as it is possible to see, revealing new features of the vast universe we call home.

MediaInfo

General
Complete name : Revolutions.The.Ideas.That.Changed.the.World.Telescopes.1080p.mkv
Format : Matroska
Format version : Version 4 / Version 2
File size : 1.55 GiB
Duration : 59 min 11 s
Overall bit rate : 3 753 kb/s

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Format settings, GOP : M=8, N=32
Codec ID : V_MPEG4/ISO/AVC
Duration : 59 min 11 s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 25.000 FPS
Standard : Component
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : MBAFF
Scan type, store method : Interleaved fields
Scan order : Top Field First
Language : English
Default : Yes
Forced : No
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : A_AAC
Duration : 59 min 11 s
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 spf)
Compression mode : Lossy
Language : English
Default : Yes
Forced : No

Text
ID : 3
Format : DVB Subtitle
Codec ID : S_DVBSUB
Codec ID/Info : Picture based subtitle format used on DVBs
Language : English
Default : No
Forced : No

Screenshots: