Daily Shaarli
October 30, 2024
Introduction
Heat and cold are now established health risk factors, with several studies reporting important mortality effects in populations around the world.1–3 The associated health burden is expected to increase with climate change, especially under the most extreme scenarios of global warming.4,5 ///
Many more cold-related excess deaths than heat-related excess deaths. However, the chart shows a different scale for heat- vs. cold-related deaths...
It would be physically possible, but there's no practical way to do it just with chemically-propelled rockets. The extremely high density of the atmosphere caps the top speed of the rocket until it's at high altitude, exacerbating gravity loss, so you'd need a ridiculous propellant mass ratio. (At only 100mph, the dynamic pressure at low altitude is comparable to the supersonic max-Q of a terrestrial rocket launch.)
What could conceivably work would be to use balloon ascent to get up to a high altitude "for free" and then use a chemical rocket from there. Designing and engineering something that can land, collect samples, inflate a balloon in the Venusian surface environment, and conduct an interplanetary launch from there is left as an exercise for the reader. //
@jwenting don't forget being chemically resilient to sulfuric acid at 700 K
Historically, we could link to a certain part of the page only if that part had an ID. All we needed to do was to link to the URL and add the document fragment (ID). If we wanted to link to a certain part of the page, we needed to anchor that part to link to it. This was until we were blessed with the Text fragments!
What are Text fragments?
Text fragments are a powerful feature of the modern web platform that allows for precise linking to specific text within a web page without the need to add an anchor! This feature is complemented by the ::target-text CSS pseudo-element, which provides a way to style the highlighted text.
Text fragments work by appending a special syntax to the end of a URL; just like we used to append the ID after the hash symbol (#). The browser interprets this part of the URL, searches for the specified text on the page, and then scrolls to and highlights that text if it supports text fragments. If the user attempts to navigate the document by pressing tab, the focus will move on to the next focusable element after the text fragment.
How can we use it?
Here’s the basic syntax for a text fragment URL:
https://example.com/page.html#:~:text=[prefix-,]textStart[,textEnd][,-suffix]
Following the hash symbol, we add this special syntax :~: also known as fragment directive then text= followed by:
- prefix-: A text string preceded by a hyphen specifying what text should immediately precede the linked text. This helps the browser to link to the correct text in case of multiple matches. This part is not highlighted.
- textStart: The beginning of the text you’re highlighting.
- textEnd: The ending of the text you’re highlighting.
- -suffix: A hyphen followed by a text string that behaves similarly to the prefix but comes after the text. Aslo helpful when multiple matches exist and doesn’t get highlighted with the linked text.
The answer is significantly dependent on how much aerodynamic pressure and heating you can tolerate, and whether it's possible to achieve high specific impulse from a rocket engine exhausting into Venusian atmosphere.
At 10km above the Venusian "reference altitude", a speed of only 46 m/s (~100 mph) puts you at a Q of 39.5kPa -- a little higher than "max Q" of most Earth-orbit launchers. If your Q limit is on that order of magnitude, it's going to take you a very long time to get out of the Searing Black Calm, which means you're going to lose a lot of delta-v to gravity -- it takes about 8 minutes going straight up before you can even think about pitching over into a gravity turn.
At least one person has estimated the delta-v to reach Venusian orbit at 27km/s, but they did not provide much detail on their methodology.
By having elfin engineers provide a magical rocket engine capable of ~240s specific impulse when exhausting into 60 atmospheres of pressure, I was able to reach orbit in my home-brewed simulation, lifting off from Maat (to save me 8km and 30 atmospheres of vertical suffering), with about 15000 m/s of delta-v. Max Q achieved was 55 kPa.
"While I am running a campaign of positive solutions to save America, Kamala Harris is running a campaign of hate. She has spent all week comparing her political opponents to the most evil mass murderers in history," Trump's statement began.
This is in reference to Harris attempting to paint Trump as a Hitler figure, a lead many on the left followed by referring to Trump supporters as "Nazis," especially during his Madison Square Garden rally.
"Now, on top of everything, Joe Biden calls our supporters 'garbage,'" Trump continued, leading to the most important sentence in his statement. "You can't lead America if you don't love the American People."
"Kamala Harris and Joe Biden have shown they are both unfit to be President of the United States. I am proud to lead the biggest, broadest, and most important political coalition in American history. We are welcoming historic numbers of Latinos, African Americans, Asian Americans, and citizens of every race, religion, color, and creed. It is my desire to be the President of all the people.". //
NavyVet Midwestern Copper
38 minutes ago
The campaign is supposed to be a debate about ideas and policies. President Trump has upheld his end of that.
In contrast, Harris has done nothing but lie, slander, demean, and defame her opponent. The only policy she has presented clearly is pro-abortion. That's it. The rest has been hateful bigoted lying spew hurled President Trump's way.