thanks
Tau.Neutrino said:
Knee jerk reactions.
> Extraterrestrial Hunters Figure Out a Way to Expand Their Search for Signals by a Factor of 200
How is the Allen array going? Is it finished yet?
> Gravitational waves could show what’s happening inside a star as it’s going supernova
First catch your rabbit.
> New quantum paradox throws the foundations of observed reality into question
Let me guess, Bell’s inequality again?
> A new method for directed networks could help multiple levels of science
I put forward a proposal for helping multiple levels of Science to CSIRO. Rejected as it wasn’t sufficiently “applied”.
> Researchers capture the world’s first 3,200-megapixel digital photo
Baby steps.
> Paving the way for tunable graphene plasmonic THz amplifiers
Um. What?
> Quantum light squeezes the noise out of microscopy signals
Quantum light is the noise in microscopy signals.
> The weird space that lies outside our Solar System
Had a look at that some time back. The local bubble. Yes. It is weird.


> Biggest Bang Since ‘The Big Bang’ Creates A Black Hole Science Says Should Not Exist
Why not? I mean a small bang may create a black hole that should not exist. But why a big one?
> A New Cosmic Tension: The Universe Might Be Too Thin
Density of the universe. Has been studied since before the days of Edwin Hubble. Tensions are part and parcel of cosmologies these days – usually they’re the result of someone underestimating the size of the error bars. See also recent discovery of giant halos around galaxies – they aren’t thin.
> Mathematicians Report New Discovery About the Dodecahedron
New? As it happens, I made a new discovery about the dodecahedron about 30 years ago. But so what?
> Researchers develop molecule to store solar energy
A relative of chlorophyll?
> Strange, Misshapen Orbits of Planet-Forming Disks in a Triple-Star System
My guess is the standard warped disk. But if it’s a highly elliptical orbit then I’d be very interested.
> Research unravels what makes memories so detailed and enduring
I give up. What makes memories so detailed and enduring?
>> Extraterrestrial Hunters Figure Out a Way to Expand Their Search for Signals by a Factor of 200
> How is the Allen array going? Is it finished yet?
No and it never will be. Instead of the 350 antennas originally planned, we’re stuck at 42.
Subsequent finding since the original donation has succeeded only in paying for continued observations and for upgrading the sensors of all 42 antennas. The upgrading alone cost $3.6 million (or more).
> https://www.wired.com/story/mathematicians-report-new-discovery-about-the-dodecahedron/
This is a brilliant little article. Well worth a read.
Can a straight line on the surface of a dodecahedron go from one corner back to the same corner without passing through any other corners?
For the cube, tetrahedron, octahedron, and icosahedron, mathematicians recently figured out that the answer is “no”. For the dodecahedron it’s “yes”. And mathematicians have found all classes of solutions.
The method is conceptually simple but mathematically and computationally difficult. Rather than bending the path each time it reaches an edge, glue on a new pentagon pair and keep going. Given that there is an exponentially increasing number of ways to glue on new pentagon pairs, this becomes computationally expensive. Which is where the mathematics comes in.
Evaluating all possibilities gives a surface topologically equivalent to a doughnut with 81 holes. Which they used to find all solutions.
> https://www.bbc.com/future/article/20200908-the-weird-space-that-lies-outside-our-solar-system
This is about the results from the Voyager spacecraft.
> the boundary between the heliosphere and the interstellar medium. Far from being a distinct boundary, the very edge of our Solar System actually churns with roiling magnetic fields, clashing stellar windstorms, storms of high energy particles and swirling radiation. The size and shape of the heliosphere bubble alters as the Sun’s output changes, and as we pass through different regions of the interstellar medium. When the solar wind rises or falls, it changes the outward pressure on the bubble.
> In 2014, the Sun’s activity surged. in late 2015, it overtook Voyager 2. The plasma surge was detected by Voyager’s 40-year-old sensing technologies, powered by a slowly decaying plutonium battery. A little more than a year later, the last gasps of the dying wind reached Voyager 1, which had crossed over into interstellar space in 2012.
> The solar wind burst reached them in different regions at different times, which provided useful clues about the nature of the heliopause. The data revealed that the turbulent boundary is millions of kilometres thick. It covers billions of square kilometres around the surface of the heliosphere. The heliosphere is also unexpectedly large, which suggests that the interstellar medium in this part of the galaxy is less dense than people thought.
> https://liu.se/en/news-item/forskarnas-molekyl-lagrar-solenergi-
An optical switch. It’s not clear how energy can be extracted once absorbed.