The Railgun; U.S. Military’s most Powerful Gun
This is a video about United State's military's most powerful gun named The railgun. As powerful as it may be, the railgun has lots of engineering challenges too. Watch
The Book of First Chronicles in 60 seconds
The book of first Chronicles contains the story of King David. Especially, the book describes his plans for the temple (the house of God in Jerusalem). David gave careful instructions to the priests. He wanted everyone to serve God properly. http://dlvr.it/TCYBtC
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