Anyone willing to give this a try? They use a water bottle (clear) to focus the sunlight to start a fire!
Anyone willing to give this a try? They use a water bottle (clear) to focus the sunlight to start a fire!
It is, of course, obvious that speed, or height of fall, is not in itself injurious ... but a high rate of change of velocity, such as occurs after a 10 story fall onto concrete, is another matter.
Posting Permissions
Reply With Quote
Bookmarks