4 ms·
Xenon is actually pretty expensive. http://boards.straightdope.com/sdmb/showthread.php?t=581982 http://boards.straightdope.com/sdmb/showthread.php?t=581982
by Pinckney 13y ago
Xenon is actually pretty expensive.
http://boards.straightdope.com/sdmb/showthread.php?t=581982 http://boards.straightdope.com/sdmb/showthread.php?t=581982