Clip
Concentrating 4.6 Billion-Year-Old Photons
1:12:11 - 1:13:25 (01:14)
A 20-foot wide mirror has been built to concentrate photons that have traveled for 4.6 billion years and have been completely diffused.
A 20-foot wide mirror has been built to concentrate photons that have traveled for 4.6 billion years and have been completely diffused.