Leonard Susskind: Big Machines

Leonard Susskind

• Significant figures (有効数字)
• Discrepancy (ディスクレパンシー、相違)
• Elementary particle (素粒子)

Shamit Kachru on Extra Dimentions

Stanford physicist Shamit Kachru at a LASER ( http://www.scaruffi.com/leonardo ) discussing how extra dimensions of space dimensions may help to explain some of the puzzles of modern physics (PDF of the presentation: http://www.scaruffi.com/leonardo/lase0312/kachru.pdf )
More videos: http://www.scaruffi.com/videos.html

Gluon

Types	8
Mass	0
Mean lifetime	-
Electric charge	0
Color charge	Octet
Spin	1
Parity	-
C Parity	-

Photon

Mass	0
Mean lifetime	Stable
Electric charge	0
Spin	1
Parity	-1
C Parity	-1