Su	Mo	Tu	We	Th	Fr	Sa
31	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

BBC - Chemistry: A Volatile History (2010) (Repost)

Posted By: Polik88

Date: 26 Jan 2013 02:03:40

The explosive story of chemistry is the story of the building blocks that make up our entire world - the elements. From fiery phosphorous to the pure untarnished lustre of gold and the dazzle of violent, violet potassium, everything is made of elements - the earth we walk on, the air we breathe, even us. Yet for centuries this world was largely unknown, and completely misunderstood. In this three-part series, professor of theoretical physics Jim Al-Khalili traces the extraordinary story of how the elements were discovered and mapped. He follows in the footsteps of the pioneers who cracked their secrets and created a new science, propelling us into the modern age.

Episode 1: Discovering the Elements
Just 92 elements made up the world, but the belief that were only four - earth, fire, air and water - persisted until the 19th Century. Professor Al-Khalili retraces the footsteps of the alchemists who first began to question the notion of the elements in their search for the secret of everlasting life. He reveals the red herrings and rivalries which dogged scientific progress, and explores how new approaches to splitting matter brought us both remarkable elements and the new science of chemistry.

Episode 2: The Order of the Elements
In part two, Professor Al-Khalili looks at the 19th century chemists who struggled to impose an order on the apparently random world of the elements. From working out how many there were to discovering their unique relationships with each other, the early scientists’ bid to decode the hidden order of the elements was driven by false starts and bitter disputes. But ultimately the quest would lead to one of chemistry’s most beautiful intellectual creations: the periodic table.

Episode 3: The Power of the Elements
In the final part, Professor Al-Khalili uncovers tales of success and heartache in the story of chemists’ battle to control and combine the elements, and build our modern world. He reveals the dramatic breakthroughs which harnessed their might to release almost unimaginable power, and he journeys to the centre of modern-day alchemy, where scientists are attempting to command the extreme forces of nature and create brand new elements.

MediaInfo:

General
Complete name : Chemistry-A.Volatile.History-Part.1.avi
Format : AVI
Format/Info : Audio Video Interleave
File size : 466 MiB
Duration : 58mn 43s
Overall bit rate mode : Variable
Overall bit rate : 1 110 Kbps
Writing library : VirtualDub build 32661/release

Video
ID : 0
Format : MPEG-4 Visual
Format profile : Advanced Simple@L5
Format settings, BVOP : 2
Format settings, QPel : No
Format settings, GMC : No warppoints
Format settings, Matrix : Default (H.263)
Codec ID : XVID
Codec ID/Hint : XviD
Duration : 58mn 43s
Bit rate : 970 Kbps
Width : 640 pixels
Height : 352 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.172
Stream size : 407 MiB (87%)
Writing library : XviD 1.2.1 (UTC 2008-12-04)

Audio
ID : 1
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 3
Mode : Joint stereo
Mode extension : MS Stereo
Codec ID : 55
Codec ID/Hint : MP3
Duration : 58mn 43s
Bit rate mode : Variable
Bit rate : 133 Kbps
Channel(s) : 2 channels
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 53.6 MiB (12%)
Alignment : Aligned on interleaves
Interleave, duration : 24 ms (0.60 video frame)
Interleave, preload duration : 535 ms
Writing library : LAME3.98r
Encoding settings : -m j -V 4 -q 3 -lowpass 17 –abr 133

Screenshots