Recent content by jedishrfu

I remember the New Zealand disaster where a tour group disembarked on an island on their way to the rum of a volcano and it erupted. https://en.wikipedia.org/wiki/2019_Whakaari_/_White_Island_eruption

Yeah me too! Learned the latest tech from this show. One good thing in the article, he helped the Internet Archive preserve all episodes.

https://arstechnica.com/gadgets/2026/01/stewart-cheifet-pbs-host-who-chronicled-the-pc-revolution-dies-at-87/

Congratulations to current and past winners of these awards. This is what keeps PhysicsForums going. "And now back to our regularly scheduled program." :-)

Thats awesome. I can relate to working as an undergrad. I worked at a dept store as a sweeper/maint in the evenings to a small appliances salesman working 20 hours per weekday and 10 hours on weekends. I started out on minimum wage $1.75 got a raise to $1.85 and minimum wage was increased to...

Your idea of scale-based universes within universes, while a fun topic for science fiction stories, is not part of scientists' collective thinking today. The novel Death's End by Cixin Liu, part of his Three-Body Problem trilogy, explores pocket universes where humanity retreats during a...

More condolences from the WoodBarter site where Paul was also a key member spreading his knowledge of wood. https://woodbarter.com/threads/paul-hinds-has-passed-on.55451/#post-776297 and the site Wood Talk Online: https://www.woodtalkonline.com/topic/44331-paul-hinds-has-passed/

Try another web browser or reboot your system to see if the browser was in a wonky state, On MacOS, I was able to export as PDF and save as a webarchive. The PDF file was viewable via the Preview app and the webarchive file via Safari. I know I've seen cases where the webpage does a...

Yes, there are many places where AI/ML/DL are well-suited to filtering through reams of data. In one case, we used an ML to recognize gunshots. It involved collecting 5000+ gunshot samples, percussion sounds, and other relevant sounds, and then training a model to recognize gunshot events...

Dear Robert, My condolences to you and your family. He was a great contributor to the PF community. We will miss him. I will miss his balloonology reference in his PF signature. -- Jedishrfu ==================================================================== ONE FURTHER NOTE: My suggestion...

Try not to overthink this. As has been mentioned, an indefinite integral represents the whole class of integral solutions. It's like integrating up to a point and then waiting for someone to tell you what the limits are before you can find a definite answer. Math handbooks include tables of...

I've always thought of indefinite integrals as ones with unspecified integration limits. Wikipedia gets into it in more detail. https://en.wikipedia.org/wiki/Antiderivative

You guys missed the point. Her number was off by 1.7 billion years and she went on to sing no one can ever say it's true. Simon felt that her lyrics insulted all the hard work that scientists went through to get that number and continue to go through to further refine it.

And 10 famous observatories on the West Coast https://www.latimes.com/travel/la-trw-telescope15mar11-story.html Mount Wilson Observatory — San Gabriel Mountains; public tours daily (Apr–Nov); 60-inch telescope by reservation; groups ≤25; $800–$1,500. Big Bear Solar Observatory — Island solar...

Even better would be to find an observatory near you. Major Research & Historic Observatories in California Palomar Observatory: Near San Diego, famous for the 200-inch Hale Telescope, crucial for 20th-century astrophysics. Mount Wilson Observatory: Near Los Angeles, home to early large...