Young Lion Joins Motorists causing Traffic Jam
Budding King of Beasts decides to take the easy route to its destination in South Africa's Kruger National Park, undoubtedly fraying the nerves of motorists. Understandably, traffic ground to a halt in both directions and motorists paused nervously as the big cat sauntered along. Visitors hoping to spot wildlife received an unexpected surprise when a lion decided to cross the bridge as they were crossing.
Schlieren Optical Technique Makes the Invisible Visible
A point source of light is reflected from a concave mirror and focused onto the edge of a razor blade, which is mounted in front of the camera. Light refracted near the mirror and intercepted by the blade gives the illusion of a shadow. Seen here are the heated gases from a candle flame and a hair dryer, helium gas, and sulfur hexafluoride gas. Schlieren (German, meaning "streaks") were first observed by Robert Hooke in 1665 using a large convex lens and two candles.
www.keralites.net          |
Posted by: Keralites Group <keralitesgroup@gmail.com>
| Reply via web post | • | Reply to sender | • | Reply to group | • | Start a New Topic | • | Messages in this topic (89) |
To subscribe send a mail to Keralites-subscribe@yahoogroups.com.
Send your posts to Keralites@yahoogroups.com.
Send your suggestions to Keralites-owner@yahoogroups.com.
To unsubscribe send a mail to Keralites-unsubscribe@yahoogroups.com.
Homepage: http://www.keralites.net
No comments:
Post a Comment