Environmental News

Soccer game penalty?

Bob Wilson

 

A "Yellow Card" in soccer is declared by the referee when there is a dangerous action by a player. Two yellow cards equals a "Red Card" and the player is rejected from the game (with no replacement). @tochatihu is saying that the commentor is making a serious error in judgement.

JeffD

 

the king is dead, long live the king!

 

As my time on this earth is limited, I decided to just list Hillary. Mea culpa, mea culpa, mea maxima culpa.

 

sorry, changed my mind.

 

I hope everyone now understands that these were just low (comparatively) elevation hikers and trekkers, not climbers trying to reach the summit. The first TV item I saw also gave the false impression that these were summit climbers, but an immediate search for more news found otherwise.

By 'low elevation', I mean 16,000 feet. The normal Nepal Base Camp for climbers, on the other side of the mountain, is around 18,000 feet.

As for the peak baggers, this is the first graphic I found to show the growth:

 

Gosh the two base camps are at around 17,000 feet....that's scary.

Our USAF Academy football stadium is at 6,621 feet and almost every year we see visiting players from low-level states (Hawaii, San Diego) passed out from lack of oxygen.

When I flew up in Alaska, Mt McKinley always had its own weather system....loved flying up there.

 

What size does their tracking reach down too? Even millimeter-size objects are very destructive. I'm remembering a long-ago photo of a deep pit on a Space Shuttle front window, which post-flight analysis determined to be from the impact of a paint flake.


ESA - Space debris by the numbers

Information last updated on 08 September 2025
Number of rocket launches since the start of the space age in 1957
About 7010 (excluding failures)
Number of satellites these rocket launches have placed into Earth orbit
About 23030
Number of these still in space
About 15280
Number of these still functioning
About 12500
Number of space objects regularly tracked by Space Surveillance Networks and maintained in their catalogue
About 42930
Estimated number of break-ups, explosions, collisions, or anomalous events resulting in fragmentation
More than 650
Total mass of all space objects in Earth orbit
More than 14700 tonnes
Not all objects are tracked and catalogued. The number of objects estimated based on statistical models to be in orbit (MASTER-8, reference population 08/2024)
54000 space objects greater than 10 cm (including approx. 9300 active payloads)
1.2 million space debris objects from greater than 1 cm to 10 cm
140 million space debris objects from greater than 1 mm to 1 cm

 

Bought it.

Dang it, I've got to make some and test fabricating parts. The 100 C press is reasonable but I suspect there are latent characteristics to learn. For example, pressing the chemically denatured wood into a mold should be easy enough. But as it is pressed, there may come intermediate states that induce internal structural defects are difficult to identify.

My application is after market, Tesla Model 3 doors, front and rear. The goal is to make an integrated mechanical and power assisted door handles, inside and out. Powered access will be easy but without power, lever enough to open the door latch. In effect, loss of the 12/48 VDC power to the door mechanism, it will still work with more effort.

If I can reduce to the door weight and improve power-off safety, it should be popular. Reducing weight improves the efficiency and a natural motion, integrated power/unpowered mechanism become a safety feature.

Bob Wilson

 

This such an obvious improved material, it is like going from flint tools to metal.

Bob Wilson