Monday, January 16, 2023

What happened to the Neanderthals?

   It used to be that carbon 14 dating of Neanderthal sites and modern human sites showed a 20,000 to 30,000 year overlap.  The Neanderthals were believed to had co existed with modern humans in Europe for 20 or 30 thousand years. 

    Then there was a recalibration of the Carbon 14 data that showed the Neanderthal sites disappeared about the same time that sites of modern men appeared.  Which leads to the obvious conclusion that Neanderthals lost the competition with modern man and were wiped out.  Unpleasant idea, but likely.

Carbon 14 data is tricky.  Energetic particles from the Sun and cosmic rays strike ordinary Carbon 12, and turn it into radioactive Carbon 14.  This has a half life of 14 thousand years, a good long time.  Living organisms take in both sorts of carbon.  When the organism dies it stops taking in carbon.  By measuring the radioactivity from the carbon 14 in the organic material we can tell how many years has passed since the organism died.  It’s a delicate measurement; the radioactivity of the Carbon 14 is not very strong, compared to say Uranium.   It gets even weaker as time goes by, 14 thousand years, Carbon 14 half life, reduces the radiation by half. 

  I am not hep to just how the Carbon 14 dating was adjusted, but the result moved the oldest Neanderthal sites back 20 to 30 thousand years, putting then up again modern men moving into Europe. 

 

 

 

How many more pieces of classified will turn up?

 So far we have four separate stashes of classified on Biden owned houses or rented offices.  Wanna bet some more classified will surface shortly?

Sunday, January 15, 2023

1917 (Movie title) 2019 (date movie released)

In the height to World War I (1917 was the last full year of the war, armistice was declared in November 1918). Two British infantry men are sent on an important mission to deliver orders calling off an attack planned for the next morning.  The movie starts with long long shots of our two heroes striding thru trenches, walking across no man’s land, walking across a green pasture with a couple of cows grazing is it.  Scenery is not all that pretty and nothing happens. 

   While hiding our in a ruined barn watching a dog fight, one of the planes crashes right into the barn.  They pull the pilot out of the burning wreck.  Dunno what the Kaiser told his pilots, but this one, after they save his life, pulls out a gun and shoots one of them.  His buddy puts some rifle bullets into the German pilot and then comforts his buddy as the buddy dies in his arms. 

   The survivor does eventually make it to the unit he set out for and delivers the written orders canceling the attack.  End of movie.

    I was not impressed.  The protagonists never do anything memorable, they just act as targets.  They do a lot of walking, and hitch a ride on and army truck, but this isn’t all the interesting.    

Saturday, January 14, 2023

Notices to Airmen.

 That’s what they were called back in the 1960’s when I was serving in the Air Force.  They listed things pilots needed to know before a mission, things like closed runways, Military flying exercises, new high tension power lines.  I hear our transportation secretary had the time to rename the Notice to Air Missions.  Airmen was too sexist for Mr. Buttigieg.  While having time to fiddle with the name, he did not have time to make sure the system was in good enough shape to continue producing NOTAMs to pilots.  I am so glad Mr. Buttigieg is so woke as to change names but not make sure the system works. 

Thursday, January 12, 2023

In the Air Force we never took classified home.

 My Air Force service was in the 1960’s.  Each office in the unit had a safe for classified.  If I needed to read a piece of classified, I went to the unit office.  The NCOIC (NCO in Charge) would open the safe.  I would sit and read the classified in the office.  When finished I would hand the classified back to the NCOIC and he would lock it in the safe.  We never took classified out of the office, let alone home. 

  The TV news is chewing over Biden's (and Trump’s) numerous stashes of classified at the former President’s and serving president’s homes.  We would not have allowed that in the Air Force when I was serving.

Wednesday, January 11, 2023

Gas Stoves

Speaking as a cook, gas stoves are far better than electric stoves.  Gas stoves are hotter, boil water faster.  Turn down the heat on a gas stove and the heat goes down, right now.  Turn down the heat on an electric stove and a long time goes by, burning your food, before anything useful happens, like the heat going down. 

   Gas burns clean, far cleaner that the wood fires that heated human’s caves for 500,000 years in the past.  Far cleaner than smoke from a cigarette, of heaven help us smoke from, a cigar.

  Gas stoves use almost all of the heat energy in the gas to heat the food.  Electric stoves only use 40% (at best).  Back in the electric plant fuel is burned to make steam to turn steam engines that drive the electric generators.  Hot high pressure steam goes from the boiler into the steam engine.  Much cooler, lower pressure steam comes out of the steam engine.  Only while the piston of the steam engine can keep going down, expanding the hot steam, converting heat energy into mechanical energy, does the heat energy of the fuel get converted into electricity.  For current technology, only 40% of the heat energy goes into making electricity, the other 60% goes into heating up the plant’s cooling system.

Was the FAA system that crashed this morning running Windows??

 

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