koti

Today I learned that the country of Bhutan produces only 5% of its potential hydroenergy production and sells 70% of that.

This is good on more than one level:

Moved to political humor.

I find this pretty amusing:

Very funny Information is non physical but it's a hell of a currency. There is a very good chance that you are right

I would do a weekly wrap up through a mailing list of the most interesting threads or maybe even posts. And maybe some fun polls which we could vote in weekly or monthly with fun, non material prizes for the users.

Its fake: https://www.snopes.com/did-trump-tweet-president-dow-joans/

Welcome Orzeszku There are quite a few experts here who specialize in your areas of interest so you definitely came to the right place. Your English sounds very good btw.

It depends on your keyboard language preference. The English correct quotation marks are ”text” whereas my device is set to a different language where „text” is the correct quotation. I hope thats ok.

I wrote „m/s” instead of „km/s” - it is a big difference and I stand corrected. I’m going to blame the „.” instead of „,” on typing from my phone but it is also a horrible error and I stand corrected here as well. Thank you for your usual accurate assistance John.

Sound waves are really slow compared to electromagnetic waves (343 m/s) Electromagnetic waves (radio, microwave, visible light, UV, etc) all have the same speed which is refered to as the speed of light (300.000 m/s)

Today I learned that you can measure the speed of light with a microwave oven and some chocolate. You put some previously molten chocolate evenly spread out across a plate and place the plate in an oven with the integral plate of the oven upside down to prevent the chocolate from spinning while heating up. Put it on low for about 40 seconds and take the plate out. Since a microwave oven creates a standing wave which heats the chocolate unevenly, you get „hotspots” of molten chocolate on the plate. You take a toothpick and poke the chocolate to find the hotspots and leave the toothpics there - you just found the peaks of your wave. You now measure the distance between the toothpics sticking out of the chocolate with a ruler and multiply it by the frequency of the oven. Pretty awesome experiment especially for kids. A guy on youtube got an 0.3% error margin result which is very impressive considering the crude methodology of this measurement. Theres a youtube film explainig the whole thing, its in Polish but I’ll post it anyway for reference if anybody wants to see that the numbers really add up surprsingly accurately: Edit: This is such a simple and cool experiment which you can perform in any kitchen without any lab gear and yields a wonderfuly accurate result. I wonder if any physics teachers are using this in class @swansont

There is something perversely magnetic about that combination of audio/video.

Yes, "Neros77" is a master at that. Check out his youtube channel for more

How do you like new retro wave music? :

I saw that at least 3times. Hilarious.

Tom Morello was the guitarist in „Rage against the Maschine” and „Audioslave”

Here's an old Bridge joke from the time when I was learning to play Bridge in late 80's: Two couples met on a Friday night to play Bridge. The next morning one husband calls the other and says:1 - Buddy, I'm sorry I have to say this to you but we were missing money after last night.2 - Oh man, are you seriously considering we took your money?!1 - Naw, we found the money but the bad taste is still there.

Today I learned that a certain species of fish - orange-spotted tusk fish is capable of using tools. Specifically, it finds clams and smashes them against a certain kind of rock to get to the meat inside. This is from a 60 minute first episode of a BBC documentary entitled „Blue Planet 2” Stunning visuals, literally every frame of those 60 minutes could be framed and put on a wall. Plus Hans Zimmer made the soundtrack.

Thought I'd make a vaccine meme. Hope you like it.

Hey Moontanman, buddy...there's only white people in the video, you should know better than posting inappropriate stuff like that. On the non sarcasm side - I love the video, that's how I wanna feel all the time.

That 20 millikelvin operating temperature doesn’t look too promising. I’m no expert but it’s probably not any time soon we could get a home environment PC to near absolute zero temperature.