Hell...and a miscommunication...

Source - Cyanide & Happiness

See, it's funny because Joe doesn't seem to understand that warm gases expand, lowering their density and causing them to rise to higher levels. So I guess the first - assumedly top level from the diagram that the devil points at - would be the hottest level just like how the upper stories of a building are usually warmer than the lower stories.

Then again, the circles of hell as described by Dante Alighieri in his Inferno suggest that the lower levels are for the greater sinners where greater punishment is meted out, and that image seems to have permeated the popular consciousness, so Joe's thinking seems to be reasonable.

Maybe this is another example of two people both being correct but simply not communicating with each other.

Just talk it out, Devil and Joe.

Then again, if we assume that hell is somewhere underground - maybe under Turkmenistan, maybe somewhere else - then the geothermal gradient should likely be considered.

The Real Story of Oppenheimer

In case there's anybody out there who hasn't seen Oppenheimer at this point, I strongly recommend it.

Critics have been raving about it. It was half of a cultural event last summer. It's not 100% accurate - though it is largely factual. It isn't without criticism, but it's a great film.

With all that being said, there's so much more to the story of Robert Oppenheimer and the Manhattan Project. Do yourself a favor and watch the above video from the Veritasium YouTube channel.

And, if you want to know more, move onward to Fallout by Jim Ottaviani and American Prometheus by Bird and Sherwin.

Oppenheimer was a fascinating, brilliant man whose effect on our world is almost immeasurable, and he is a compelling source for a movie, a graphic novel, or a biography.

Great use of spaces on a building

 

Source - Reddit

I would 100% study in that building. 

It took me a while, but I was able to find that it's at UNAM (Universidad Nacional Autónoma de México) in Mexico City. Here's a Google Map link.

And I appreciate that it's up to date.

No idea what they'll do when the eighth period has to be populated, though.

Dihydrogen Monoxide!

Source - Reddit

OMG, that solution is so basic.

No, not basic, basic.

Outdated Periodic Table

 

Source - XKCD

That would be so much easier to memorize.

As you can see if you look at the timeline of the Big Bang, that's about right that half an hour after the big bang, the only elements would have been hydrogen (75% of the universe's mass), helium (25%), lithium (trace amounts), and radioactive beryllium.

Of course, I'm not sure what this periodic table could've been printed on - or by whom, but that's not the point.

The rollover joke - Researchers claim to have synthesized six additional elements in the second row, temporarily named 'pentium' through 'unnilium'. - is also outstanding.

Freezing liquid nitrogen

I've done that.

Quite a few years ago, in class, I had some liquid nitrogen thanks to the parent of one of my students, and I was able - with the help of a vacuum pump - to repeat this demonstration in class.

I'm not sure my students were nearly as amazed as I was, but it's a singular occurrence for me.

Very cool...(pun intended)...

How To Make Drawings Float With A Magic Water Marker

That's pretty cool, man.

It's no Animator v Animation or anything, but it's a neat way to show that polar and nonpolar substances typically don't mix.