SpaceX In-Flight Abort Test

SpaceX in-flight abort (artist's conception)Tomorrow, SpaceX is planning to conduct what promises to be a spectacular test flight of the crew escape system for their Crew Dragon spacecraft.  If successful, this should clear the launcher for the first crewed flight to the International Space Station later this year.  The launch is scheduled for a four-hour launch window which opens at 13:00 UTC on 2020-01-18.  At this writing, there is a 90% probability of acceptable weather for the test.

If all goes as planned, the flight will be brief.  At the moment of maximum dynamic pressure (when the combination of velocity and air density produces maximum stress on the vehicle [“max q”]), the capsule’s Super Draco thrusters should fire to carry it away from the booster, whose engines will be cut by the abort system.  This is expected to occur around 84 seconds after launch.... [Read More]

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How ‘spooky’ is quantum physics?

NEWS

How ‘spooky’ is quantum physics? The answer could be incalculable

Proof at the nexus of pure mathematics and algorithms puts ‘quantum weirdness’ on a whole new level.
Jack says: Caveat this assumes ALL IS INFORMATION monism Copenhagen Bohr-London-Von Neumann-Wigner-Wheeler epistemic interpretation. The recent papers by Huw Price with Ken Wharton on Costa de Beauregard “zig zag” plus the papers by Roderick Sutherland suggest a much simpler approach within Yakir Aharonov’s TSV theory extended to Bohm-Einstein-Schrodinger “realism” ontological interpretation. Furthermore, and more importantly, this work below is restricted to QM with non-signaling EPR (edge boundary hologram screen) dual to non-traversable ER wormholes in the interior bulk hologram image. PQM with Bohm wave-particle action reaction non-zero now has signaling EPR with traversable ER wormholes as I had in 1975 pop book “Space-Time and Beyond” (see MIT David Kaiser’s “How the Hippies Saved Physics”).
The PQM narrative surpasses what you see below.
Conceptual artwork of a pair of entangled quantum particles or events (left and right) interacting at a distance.

Quantum entanglement is at the centre of a mathematical proof.Credit: Victor De Schwanberg/Science Photo Library... [Read More]

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In the quantum realm, cause doesn’t necessarily come before effect

As I have been saying along with Aharonov, Price, Sutherland, Wharton and many others:

https://www.newscientist.com/article/mg24532650-700-in-the-quantum-realm-cause-doesnt-necessarily-come-before-effect/

In everyday life,... [Read More]

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Tale of the Tape (Popular Mechanics)

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DEPARTMENT OF DEFENSE/TO THE STARS ACADEMY OF ARTS AND SCIENCE

TTTIt was the video that ushered in the UFO renaissance: a grainy clip showing the Navy’s encounter with a mysterious aircraft in 2004. The Pentagon says the public was never supposed to see it. So who leaked it? How’d they do it? And what does the footage actually show?

TOTD 2020-1-16: Beware of the Ides of January

1957 9-county commission recommends creation of BART
1970 An Evil Man is Born
1976 “Donny & Marie” [Osmond] musical variety show premieres on ABC TV
1988 NFL St Louis Cardinals announce move to Phoenix
1991 Operation Desert Storm begins, with US-led coalition forces bombing Iraq, during the Gulf War
1995 7.2 earthquake destroys Kobe, Japan and kills 5,372
2020 Impeachment trial of US President Donald Trump begins in the Senate
Almost all came from this site.

https://www.onthisday.com/events/january/16... [Read More]

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Musings on Turning 50

A Man who views the world the same at fifty as he did at twenty has wasted thirty years of his life.
—Muhammad Ali

I turn 50 today. Humans make meaning out of randomness, and since we use base 10 math, birthdays ending in zero can be a big deal. I find that 50 is an opportunity for reflection on my life. I always had goals for age 50, some spoken and some just more understood. Part of the wonder I have is how I have changed in ways that Bryan of 30 years ago cannot even imagine.... [Read More]

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Class Dismissed

In Austen’s Emma, the eponymous heroine famously remarks that the yeoman farmers”are precisely the order of people with which I feel I can have nothing to do….a farmer can need none of my help and is therefore in one sense as much above my notice as in every other he is below it.”
I recently wrote about the unique obstacles involved in a long-standing cross- gender friendship. But additionally, he was a carpenter and I was a lady, (metaphorically, if you remember the Tim Hardin song). So it was also cross-class. If I’m gonna write about it all, may as well be blunt. Like Emma herself.
It’s two decades since I left the Philadelphia Main Line, and nothing stays the same. But back then it was a sort of palimpsest: a page upon which more than one text has been written, so both exist interlineates faintly on the same surface.
For instance, to say you lived in Bryn Mawr often elicited the reaction from people, “oh! Bryn MAAHRR!” with a mocking la-di-da affect. By that time the big mansions on large tracts, originally summer homes for the wealthy Philadelphians who commutes to them via the Main Line of the Pennsylvania Railroad, were mostly gone, turned to schools or churches of just demolished and the demesnes subdivided, but, still, it was a wealthy zip code, where a lot of professionals had moved into the shells of the now etiolated families whose names were be found in the Social Register (original version only, not the newer one which included morganatic unions.)

That was one text. But there was another: working-class Bryn Mawr. Railroad Avenue. The streets off Lancaster. They were by no means slums, they were well-kept neighborhoods, well-kept by the workmen who also kept up the richer people’s homes: municipal workers, truck drivers, many of whom had second or third jobs as landscapers. They had not gone to college, although their children had or would.
And they were invisible to the wealthier denizens. Like Emma’s yeomanry, they didn’t need charity. And they didn’t have anything the socially-conscious wealthier people aspired to possess. So they were both above, and below, the notice of the professionals and the (rapidly declining) scions of the former aristocracy. ... [Read More]

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Rice Cookers: They Do it with a Magnet!

Back in May, 2018, we had a post here about rice cookers.  That was about a very high-end unit, but the bottom of the line products often used a remarkably clever means to cook perfect rice every time, regardless of variables such as the kind of rice, altitude, initial temperature of the water, and the exact quantities of rice and water (within reasonable limits) put into the cooker.  Here is a Technology Connections video about how they did it.

... [Read More]

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…That He Who Runs May Read..

We are all hoping, not without justification, for a quick disposal of the impeachment charges in the Senate. I’m going to try to not even watch the news, may’s well just await the outcome,at this point. It SHOULD go our way, we’ve been assured it will, our side has the majority in the Senate. Hope is not unfounded. Cautious optimism is warranted.

But I keep seeing Romney’s fixed plastic smile…so, um, what if they betray us?... [Read More]

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TOTD 2020-1-15: Impeachment 3.0

America had the first impeachment after the civil war. Andrew Johnson was the answer to the only president who was impeached. This lasted till the 1970s. In my life time this is Impeachment 3.0. Here is the list.

  1. Nixon 1.0
  2. Clinton 2.0
  3. Trump 3.0

This impeachment is for the crime of winning in my opinion. Do you know how many millions of dollars were lost to the Clinton Foundation by that not having Hillary be the First Madame?

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Champion Barr

I have great hope for Attorney General William P. Barr. He has staked out a position and seems to be marshaling the needed forces to hold that position. He clearly must be making them sweat, because the Resistance attacks on him are getting longer and more unhinged. The latest example is a very long hit piece that is the main feature in the New Yorker.

This latest hatchet job is by David Rohde. I do not recommend that you read it. I will supply a link in a comment.

Instead, read the take-down by Mollie. She rips it to pieces, not by defending Barr, whose defense she leaves to others. No, Mollie goes to work on turf that she owns. Her counterattack on Barr’s behalf is based on journalistic malpractice.

Continue reading “Champion Barr”

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