almost making Benard cells

Aerodynamics of the flying snake Chrysopelea paradisi: how a bluff body cross-sectional shape contributes to gliding performance
https://jeb.biologists.org/content/217/3/382
http://forums.pelicanparts.com/uploa...1581458233.jpg
http://forums.pelicanparts.com/uploa...1581458233.jpg

New Paper Has a Wild Explanation For The Most Explosive 'Meteor Impact' on Record
MICHELLE STARR - 5 MAY 2020

In the early morning of 30 June 1908, something exploded over Siberia. The event shattered the normal stillness of the sparsely populated taiga, so powerful that it flattened an area of forest 2,150 square kilometres (830 square miles) in size - felling an estimated 80 million trees.

Eyewitness reports describe a brilliant ball of light, shattered windows and falling plaster, and a deafening detonation not far from the local river. The Tunguska event - as it came to be known - was later characterised as an exploding meteor, or bolide, up to 30 megatons, at an altitude of 10 to 15 kilometres (6.2 to 9.3 miles).

It is often referred to as the "largest impact event in recorded history", even though no impact crater was found. Later searches have turned up fragments of rock that could be meteoric in origin, but the event still has a looming question mark. Was it really a bolide? And if it wasn't, what could it be?

Well, it's possible we'll never actually know… but according to a recent peer-reviewed paper, a large iron asteroid entering Earth's atmosphere and skimming the planet at a relatively low altitude before flying back into space could have produced the effects of the Tunguska event by producing a shock wave that devastated the surface.

"We have studied the conditions of through passage of asteroids with diameters 200, 100, and 50 metres, consisting of three types of materials - iron, stone, and water ice, across the Earth's atmosphere with a minimum trajectory altitude in the range 10 to 15 kilometres," wrote researchers led by astronomer Daniil Khrennikov of the Siberian Federal University in their paper.

More: https://www.sciencealert.com/scientists-have-a-new-theory-about-the-colossal-tunguska-event-explosion

We 3D printed a nuclear reactor core:

https://newatlas.com/science/oak-ridge-3d-printed-nuclear-reactor-core/

http://forums.pelicanparts.com/uploa...1589293815.jpg

https://amp.cnn.com/cnn/2020/08/11/world/ceres-dwarf-planet-ocean-scn-trnd/index.html

Brine, as it exists on earth, freezes by -20C or so. If liquid brine is present on Ceres or Europa or similar, and it is water based brine (I think that’s what the articles say?) then does that mean it is warmer than -20C? Seems warmer than I thought those places were.

Man I think that’s so cool you work at Oak Ridge. I was a nuke in the Navy many years ago and wanted to work there but ultimately pursued an opportunity that paid a bit more but I’m sure was way less interesting.
Tony

Man like I said already you have a great job
Tony

It was for a long range bomber if I remember correctly back in the 60’s.

Sorry to keep commenting on your threads but nuclear power gives me goose bumps. Ever since I joined the navy at 17. Never worked in it after but always followed it in the news.

Yep, that's right. That reactor was called the Tower Shielding Reactor, IIRC. They built it and then hoisted it up in the air to understand radiological effects on the ground, etc.

I grew up in this area (East TN) but as a kid never really knew what they did at ORNL. Now that I worked there, I am honestly astounded by the things that man has figured out. Especially the knowledge and application/manipulation of things at the atomic level. You hear/read about this stuff, but we're doing it every day. My whole facility operates by stripping electrons from negatively-charged hydrogen atoms traveling at 90% of the speed of light. Works like a charm!

Yea, but it makes it pretty hard to bring your work home and set up a home office. :eek:

http://forums.pelicanparts.com/uploa...1599535758.jpg

Hedy Lamarr, often proclaimed “the most beautiful woman in the world.”
The 26-yr-old Lamarr was thriving in Hollywood when, in September 1940,
Nazi U-boats hunted down & sank a cruise ship trying to evacuate 90 British
schoolchildren to Canada. 77 drowned in the bleak north Atlantic. Lamarr,
a Jewish immigrant from Nazi-occupied Austria, who had been making America
her home since 1938, was outraged. She fought back by applying her
engineering skills to development of a sonar sub-locator used in the Atlantic
for the benefit of the Allies.The principles of her work are now incorporated
into modern Wi-Fi, CDMA and Bluetooth technology,and this work led to her
to be inducted into the National Inventors Hall of Fame in 2014.

That's the wrong photo.
http://forums.pelicanparts.com/uploa...1599536838.gif

:D:D:D



Hedley Lamarr: Meeting adjourned. Oh, I am sorry, sir, I didn't mean to overstep my bounds. You say that.

Governor Lepetomane: What?

Hedley Lamarr: "Meeting is adjourned".

Governor Lepetomane: It is?

Hedley Lamarr: No, you *say* that, Governor.

Governor Lepetomane: What?

Hedley Lamarr: "Meeting is adjourned".

Governor Lepetomane: It is?

Hedley Lamarr: [sighs, then gives the governor a paddleball] Here, play around with this for awhile.

Governor Lepetomane: Thank you, Hedy.

Hedley Lamarr: No, it's Hedley!

Governor Lepetomane: It is?

I don't get it.

<iframe width="560" height="315" src="https://www.youtube.com/embed/QVG1uClfOKs" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

I was kidding...

https://www.smithsonianmag.com/smart-news/your-next-digital-tablet-could-be-made-paper-180975727/

<iframe width="560" height="315" src="https://www.youtube.com/embed/TfA0d8IpjWU" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

<iframe width="560" height="315" src="https://www.youtube.com/embed/J0iCxjicJIQ" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

http://forums.pelicanparts.com/uploa...1616486483.jpg

It took over a decade and 1,000 hours of photography to create this picture of the Milky Way

Finnish astrophotographer, JP Metsavainio, took on the daunting task of creating a mosaic of the Milky Way back in 2009. It took him twelve years to get the whole picture which is around 100,000 pixels wide and has 234 individual mosaic panels stitched together.

Full res image here (after opening, click to enlarge): https://1.bp.blogspot.com/-TqRxEAjrDYI/YFCLF-H8K3I/AAAAAAAAS-E/rj_avOwDgw0TP66RQURSDcDIOPPxJIscgCLcBGAsYHQ/s7023/000-GrandeMosaic120DegreesLONG.jpg

More: https://www.businessinsider.in/science/space/news/finnish-photographer-jp-metsavainio-took-over-a-decade-and-1000-hours-of-photography-to-create-this-picture-of-the-milky-way-and-20-million-stars/slidelist/81563516.cms

April 1, 2021
Ingenuity Mars helicopter: The historic journey to fly on another planet
https://www.cnn.com/2021/04/01/world/mars-ingenuity-helicopter-journey-scn/index.html
http://forums.pelicanparts.com/uploa...1617312297.jpg

https://earthsky.org/space/lunar-crater-radio-telescope-lcrt-phase-2-duaxel-radio-waves-dark-ages

Apparently we're planning to build a radio telescope in a crater on the far side of the moon.

If the aliens let us.