Monday, September 9, 2019

A Monday Medley of Videos (Sept. 9, 2019)

"Helmet Test: The U.S. ECH"--Mike B (12 min.)
Stopped all the handgun loads that were tried, as well as 7.62x39 at 100 yards, and 7.62x51 at 100 yards (albeit with significant deformation)


Per the video, the 10mm Sellier & Bellot 180gr JHP appears to be an old style cup and core style hollowpoint, yet the 10 mm was still able to get decent performance (expansion and penetration) with it, but at a low cost per round. 




The only point with which I might quibble is the advice to not carry a purse with the strap diagonally across the body--at least if you are carrying a firearm in the purse. In that case, it may be worth it to not let a purse snatcher take off with your purse. 


"How Do Substations Work?"--Practical Engineering (13 min.)
A nice primer on substations and their important parts. Also good illustrations so you can identify those important parts.


Germany begins the London Blitz; Churchill decides to throw away the British Empire by not accepting peace terms; and the Japanese lose a battle to the Chinese Communists.


"John B. Calhoun and the Rats of N.I.M.H."--The History Guy (14 min.)
A brief overview of Calhoun's studies of rats, mice, and overpopulation. When we see the declining birth rates in industrial nations, one has to wonder if Calhoun was on to something. 


Basically, if the symbols have been interpreted correctly, they show the position of the sun in relation to certain constellations, which is different from today due to precession of the Earth's rotation; but it does essentially confirm the radiocarbon dating of the site (showing it was constructed about 10,000 B.C.), although the positioning of the sun per the stones would indicate a somewhat older date.


It's a little over a decade late, but the two halves of the telescope's main reflector have been joined for testing. Which means that it may be launched in the next 2 to 3 years. This is a much larger device than the Hubble telescope and should, therefore, produce even more extraordinary images.


"Is Race Real? // Edward Dutton"--Philosophy Illustrated (14 min.)
Are dog breeds real? Notwithstanding the rhetoric from the Left that "race" is a social construct, there are genetic groupings that correspond to what has traditionally been referred to as race. Dutton is an anthropologist and theologian most famous for his work on studying I.Q.  He describes this of himself: "I like researching controversial topics. If someone forcefully insists that a certain area is out of bounds and you’re ‘immoral’ for even contemplating it, then that is where new discoveries are going to lie."

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