Amusing Science

We are the Borg.
User avatar
Bruce
Posts: 20650
Joined: Wed Jun 09, 2004 11:46 pm
Title: Bruce of all Bruces
Location: Massachusetts

Re: Amusing Science

Post by Bruce »

Cubli. Perfect present to put under the tree for the little ones.

Mom! Dad! One of the presents got up and walked away!

:twisted:
Such potential!
User avatar
Witness
Posts: 34590
Joined: Thu Sep 19, 2013 5:50 pm

Re: Amusing Science

Post by Witness »

Image
User avatar
gnome
Posts: 25830
Joined: Tue Jun 29, 2004 12:40 am
Location: New Port Richey, FL

Re: Amusing Science

Post by gnome »

I call bullshit. How is the green light getting through the solid yellow pencil?
"If fighting is sure to result in victory, then you must fight! Sun Tzu said that, and I'd say he knows a little bit more about fighting than you do, pal, because he invented it, and then he perfected it so that no living man could best him in the ring of honor. Then, he used his fight money to buy two of every animal on earth, and then he herded them onto a boat, and then he beat the crap out of every single one. And from that day forward any time a bunch of animals are together in one place it's called a zoo! (Beat) Unless it's a farm!"
--Soldier, TF2
User avatar
Witness
Posts: 34590
Joined: Thu Sep 19, 2013 5:50 pm

Re: Amusing Science

Post by Witness »

gnome wrote:I call bullshit. How is the green light getting through the solid yellow pencil?
Magic. :mrgreen:
User avatar
Bruce
Posts: 20650
Joined: Wed Jun 09, 2004 11:46 pm
Title: Bruce of all Bruces
Location: Massachusetts

Re: Amusing Science

Post by Bruce »

gnome wrote:I call bullshit. How is the green light getting through the solid yellow pencil?
But you're ok with the red and blue light getting through? What about the magenta?

Maybe it's just a really reeeeeally polarized filter. :P
Such potential!
User avatar
gnome
Posts: 25830
Joined: Tue Jun 29, 2004 12:40 am
Location: New Port Richey, FL

Re: Amusing Science

Post by gnome »

I'm just prejudiced against green.
"If fighting is sure to result in victory, then you must fight! Sun Tzu said that, and I'd say he knows a little bit more about fighting than you do, pal, because he invented it, and then he perfected it so that no living man could best him in the ring of honor. Then, he used his fight money to buy two of every animal on earth, and then he herded them onto a boat, and then he beat the crap out of every single one. And from that day forward any time a bunch of animals are together in one place it's called a zoo! (Beat) Unless it's a farm!"
--Soldier, TF2
User avatar
ceptimus
Posts: 1402
Joined: Wed Jun 02, 2004 11:04 pm
Location: UK

Re: Amusing Science

Post by ceptimus »

I suppose the filter *could* just be stretching out the images along the whole length of the filter - in which case it would be useless for viewing anything that's not straight and regular along its length. That would explain the 'trick' without needing photoshop-style trickery.

I'm not saying that is how it was done - it's just one possibility.
User avatar
Doctor X
Posts: 73945
Joined: Fri Jun 04, 2004 8:09 pm
Title: Collective Messiah
Location: Your Mom

Re: Amusing Science

Post by Doctor X »

Jesus, Buffy.

--J.D.
Mob of the Mean: Free beanie, cattle-prod and Charley Fan Club!
"Doctor X is just treating you the way he treats everyone--as subhuman crap too dumb to breathe in after you breathe out." – Don
DocX: FTW. – sparks
"Doctor X wins again." – Pyrrho
"Never sorry to make a racist Fucktard cry." – His Humble MagNIfIcence
"It was the criticisms of Doc X, actually, that let me see more clearly how far the hypocrisy had gone." – clarsct
"I'd leave it up to Doctor X who has been a benevolent tyrant so far." – Grammatron
"Indeed you are a river to your people.
Shit. That's going to end up in your sig." – Pyrrho
"Try a twelve step program and accept Doctor X as your High Power." – asthmatic camel
"just like Doc X said." – gnome

ImageWS CHAMPIONS X4!!!! ImageNBA CHAMPIONS!! Stanley Cup!Image SB CHAMPIONS X6!!!!!! Image
User avatar
Rob Lister
Posts: 23535
Joined: Sun Jul 18, 2004 7:15 pm
Title: Incipient toppler
Location: Swimming in Lake Ed

Re: Amusing Science

Post by Rob Lister »

Clearly gnome is a green racist but I too have problems with the color blue.
User avatar
Anaxagoras
Posts: 29322
Joined: Wed Mar 19, 2008 5:45 am
Location: Yokohama/Tokyo, Japan

Re: Amusing Science

Post by Anaxagoras »

This one's a bit hard to believe too. Self-repairing glass:

https://japantoday.com/category/tech/Gl ... y-of-Tokyo
A fool thinks himself to be wise, but a wise man knows himself to be a fool.
William Shakespeare
User avatar
Witness
Posts: 34590
Joined: Thu Sep 19, 2013 5:50 pm

Re: Amusing Science

Post by Witness »

ceptimus is, as usual, right: the plastic thingy diffuses light, but only in one direction. As the pencils are linear objects, we don't notice the smeared out image.

Now for something classic:
User avatar
ceptimus
Posts: 1402
Joined: Wed Jun 02, 2004 11:04 pm
Location: UK

Re: Amusing Science

Post by ceptimus »

That one really has been faked. The whole point of that illusion is that white squares in the shadow are as dark as the dark squares outside the shadow. If you physically move a dark square into shadow it becomes darker still.
User avatar
Anaxagoras
Posts: 29322
Joined: Wed Mar 19, 2008 5:45 am
Location: Yokohama/Tokyo, Japan

Re: Amusing Science

Post by Anaxagoras »

I wonder what it looks like from a different angle or under different lighting conditions.

There are definitely some weird optical illusions.
A fool thinks himself to be wise, but a wise man knows himself to be a fool.
William Shakespeare
User avatar
Witness
Posts: 34590
Joined: Thu Sep 19, 2013 5:50 pm

Re: Amusing Science

Post by Witness »

ceptimus wrote:That one really has been faked. The whole point of that illusion is that white squares in the shadow are as dark as the dark squares outside the shadow. If you physically move a dark square into shadow it becomes darker still.
Sure, but where exactly is the forgery? :mrgreen:
User avatar
sparks
Posts: 17161
Joined: Fri Oct 26, 2007 4:13 pm
Location: Friar McWallclocks Bar -- Where time stands still while you lean over!

Re: Amusing Science

Post by sparks »

Anaxagoras wrote:This one's a bit hard to believe too. Self-repairing glass:

https://japantoday.com/category/tech/Gl ... y-of-Tokyo
Alien pee glass indeed. :)
You can lead them to knowledge, but you can't make them think.
User avatar
Witness
Posts: 34590
Joined: Thu Sep 19, 2013 5:50 pm

Re: Amusing Science

Post by Witness »

Cool science job:

[youtube][/youtube]
User avatar
sparks
Posts: 17161
Joined: Fri Oct 26, 2007 4:13 pm
Location: Friar McWallclocks Bar -- Where time stands still while you lean over!

Re: Amusing Science

Post by sparks »

Sublimed with Salmonelliac?

WTF? :)

Oh. It's alchemy. The first attempt, nay religion if you will, for chemistry. As you were. Before you were so unfortunately sublimated.
You can lead them to knowledge, but you can't make them think.
User avatar
Witness
Posts: 34590
Joined: Thu Sep 19, 2013 5:50 pm

Re: Amusing Science

Post by Witness »

Image
User avatar
Anaxagoras
Posts: 29322
Joined: Wed Mar 19, 2008 5:45 am
Location: Yokohama/Tokyo, Japan

Re: Amusing Science

Post by Anaxagoras »

Makes sense if you think about it.
A fool thinks himself to be wise, but a wise man knows himself to be a fool.
William Shakespeare
User avatar
Anaxagoras
Posts: 29322
Joined: Wed Mar 19, 2008 5:45 am
Location: Yokohama/Tokyo, Japan

Re: Amusing Science

Post by Anaxagoras »

Abdul Alhazred wrote:Hmm. Is this right?

The center of gravity is falling at the speed expected for the mass of the slinky?
That is correct.

The other thing to note is that the amount of stretch at the beginning is determined by gravity. If you held a slinky like that on the moon, where the gravity is only 1/6th as strong, initially it would be much shorter. On a more massive planet with stronger gravity, it would be stretched out longer.

I don't know if it's a coincidence that the bottom doesn't seem to move at all. Maybe that's just a function of how springy the slinky is, but I'm guessing it's just proportional to the amount of extension. The farther you stretch it, the faster the ends move when you release it. Unless you stretch it so far that you permanently warp the metal. Intuitively it seems right to me though.
A fool thinks himself to be wise, but a wise man knows himself to be a fool.
William Shakespeare
User avatar
Witness
Posts: 34590
Joined: Thu Sep 19, 2013 5:50 pm

Re: Amusing Science

Post by Witness »

Anaxagoras wrote:I don't know if it's a coincidence that the bottom doesn't seem to move at all.
No. You can picture the release as a wave traveling down: as long as it hasn't reached the end, said end "doesn't know" about the release.



Details: http://all-that-is-interesting.com/science-pranks.
User avatar
Bruce
Posts: 20650
Joined: Wed Jun 09, 2004 11:46 pm
Title: Bruce of all Bruces
Location: Massachusetts

Re: Amusing Science

Post by Bruce »

Perfectly describes what a typical day as a research scientist is like:
Such potential!
User avatar
Witness
Posts: 34590
Joined: Thu Sep 19, 2013 5:50 pm

Re: Amusing Science

Post by Witness »

There are hundreds of proofs of Pythagoras' theorem. but this one is kinda cute:

Image
User avatar
Witness
Posts: 34590
Joined: Thu Sep 19, 2013 5:50 pm

Re: Amusing Science

Post by Witness »

Evolution & Human Behavior wrote:Different impacts of resources on opposite sex ratings of physical attractiveness by males and females

Abstract

Parental investment hypotheses regarding mate selection suggest that human males should seek partners featured by youth and high fertility. However, females should be more sensitive to resources that can be invested on themselves and their offspring. Previous studies indicate that economic status is indeed important in male attractiveness. However, no previous study has quantified and compared the impact of equivalent resources on male and female attractiveness. Annual salary is a direct way to evaluate economic status. Here, we combined images of male and female body shape with information on annual salary to elucidate the influence of economic status on the attractiveness ratings by opposite sex raters in American, Chinese and European populations. We found that ratings of attractiveness were around 4 times more sensitive to salary for females rating males, compared to males rating females. These results indicate that higher economic status can offset lower physical attractiveness in men much more easily than in women. Neither raters' BMI nor age influenced this effect for females rating male attractiveness. This difference explains many features of human mating behavior and may pose a barrier for male engagement in low-consumption lifestyles.
http://www.ehbonline.org/article/S1090- ... X/fulltext

:mrgreen:
User avatar
Anaxagoras
Posts: 29322
Joined: Wed Mar 19, 2008 5:45 am
Location: Yokohama/Tokyo, Japan

Re: Amusing Science

Post by Anaxagoras »

Thought experiment about what would happen if you took away all the microbes:




I bet if there were no microbes in your gut, your poop would be quite different. The poop coming out would look a lot more like the food that went in. Maybe not. :notsure:
A fool thinks himself to be wise, but a wise man knows himself to be a fool.
William Shakespeare
User avatar
sparks
Posts: 17161
Joined: Fri Oct 26, 2007 4:13 pm
Location: Friar McWallclocks Bar -- Where time stands still while you lean over!

Re: Amusing Science

Post by sparks »

Without Our Friends The Microbes, we would have evolved to deal with our food without their help. Perhaps.
You can lead them to knowledge, but you can't make them think.
User avatar
Anaxagoras
Posts: 29322
Joined: Wed Mar 19, 2008 5:45 am
Location: Yokohama/Tokyo, Japan

Re: Amusing Science

Post by Anaxagoras »

Or, more likely, we just wouldn't exist in the first place. I think microbes are a necessary intermediate step between no life and complex multi-cellular life.

Two things: the chloroplasts in plants and the mitochondria in animals (actually almost all eukaryotic organisms) can be thought of as separate species since they have their own DNA. But they didn't really get into that in the video.
A fool thinks himself to be wise, but a wise man knows himself to be a fool.
William Shakespeare
User avatar
sparks
Posts: 17161
Joined: Fri Oct 26, 2007 4:13 pm
Location: Friar McWallclocks Bar -- Where time stands still while you lean over!

Re: Amusing Science

Post by sparks »

One of the many fascinating things they didn't cover (or perhaps didn't know about yet?) in my high school biology classes: Mitochondrial DNA. How the fuck does that work?

And then there's these fucking magnets...
You can lead them to knowledge, but you can't make them think.
User avatar
Bruce
Posts: 20650
Joined: Wed Jun 09, 2004 11:46 pm
Title: Bruce of all Bruces
Location: Massachusetts

Re: Amusing Science

Post by Bruce »

They used to think that atoms were the smallest particle. Then it was protons, neutrons, and electrons, but those can be broken apart as well. And the distance between them is vast. It has become increasingly clear over the course of the years that there really isn't such a thing as a solid. What we think of as solids are really just combined fields of electrons repelling against each other, exactly the way magnets repel each other. When you take those fields away, the entire universe can be compressed into a tiny point.

Ergo, most people think I'm fat, but I tell them that it's mostly empty space. :D
Such potential!
User avatar
ceptimus
Posts: 1402
Joined: Wed Jun 02, 2004 11:04 pm
Location: UK

Re: Amusing Science

Post by ceptimus »

You need to travel east, not west, to reduce your weight. That's why most space rockets are launched eastwards.
User avatar
Bruce
Posts: 20650
Joined: Wed Jun 09, 2004 11:46 pm
Title: Bruce of all Bruces
Location: Massachusetts

Re: Amusing Science

Post by Bruce »

I know how to keep from gaining weight.

Don't move.

As you approach the speed of light, your mass increases, thus you gain weight.

The farther you are from the speed of light, the better. That's why I spend most of my time on the couch.

The only reason I'm gaining weight is because the damn earth is moving so fast. :(
Such potential!
User avatar
Witness
Posts: 34590
Joined: Thu Sep 19, 2013 5:50 pm

Re: Amusing Science

Post by Witness »

Image
User avatar
Witness
Posts: 34590
Joined: Thu Sep 19, 2013 5:50 pm

Re: Amusing Science

Post by Witness »

Image

Image
Precise Metallic Replicas of Ancient Fossils and Cells by Allan Drummond

Each creature is sculpted digitally by Drummond using scientific references, including specimens from private collections. Next, they are 3D printed in wax, and finally lost-wax cast in bronze and finished by hand. The sculptures are rendered down to the smallest detail, including gills, antennae, legs, and even mitochondria in cell division.
Details & more pics: http://www.thisiscolossal.com/2018/01/p ... d539db565e
User avatar
Witness
Posts: 34590
Joined: Thu Sep 19, 2013 5:50 pm

Re: Amusing Science

Post by Witness »

sparks wrote:One of the many fascinating things they didn't cover (or perhaps didn't know about yet?) in my high school biology classes: Mitochondrial DNA. How the fuck does that work?

And then there's these fucking magnets...
Here's a nice story about mitochondria: https://www.reddit.com/r/AskReddit/comm ... t/du13k9x/.
User avatar
Witness
Posts: 34590
Joined: Thu Sep 19, 2013 5:50 pm

Re: Amusing Science

Post by Witness »



An explanation (a bit lengthy): https://www.youtube.com/watch?v=cUCSSJwO3GU

I remember a SF story using that trick. Abdul?
User avatar
sparks
Posts: 17161
Joined: Fri Oct 26, 2007 4:13 pm
Location: Friar McWallclocks Bar -- Where time stands still while you lean over!

Re: Amusing Science

Post by sparks »

First attempt at ball-bearings. They do, however require special lubrication: The blood of small children.
You can lead them to knowledge, but you can't make them think.
User avatar
Witness
Posts: 34590
Joined: Thu Sep 19, 2013 5:50 pm

Re: Amusing Science

Post by Witness »

Abdul Alhazred wrote:Not off hand.
I just remember that some starship crashed on a planet where the circle was sacred, so the crew couldn't use logs for moving their machinery. Until they thought of this geometric trick (using 1/3 of a circle was OK). :mrgreen:
User avatar
Anaxagoras
Posts: 29322
Joined: Wed Mar 19, 2008 5:45 am
Location: Yokohama/Tokyo, Japan

Re: Amusing Science

Post by Anaxagoras »

Get a load of this crazy airplane:



Only a taxi test, it hasn't gone airborne yet, but wow, that's an interesting airplane design.

https://www.theverge.com/2018/2/28/1706 ... test-video
A fool thinks himself to be wise, but a wise man knows himself to be a fool.
William Shakespeare
User avatar
Doctor X
Posts: 73945
Joined: Fri Jun 04, 2004 8:09 pm
Title: Collective Messiah
Location: Your Mom

Re: Amusing Science

Post by Doctor X »

I keep thinking it will split down the middle.

--J.D.
Mob of the Mean: Free beanie, cattle-prod and Charley Fan Club!
"Doctor X is just treating you the way he treats everyone--as subhuman crap too dumb to breathe in after you breathe out." – Don
DocX: FTW. – sparks
"Doctor X wins again." – Pyrrho
"Never sorry to make a racist Fucktard cry." – His Humble MagNIfIcence
"It was the criticisms of Doc X, actually, that let me see more clearly how far the hypocrisy had gone." – clarsct
"I'd leave it up to Doctor X who has been a benevolent tyrant so far." – Grammatron
"Indeed you are a river to your people.
Shit. That's going to end up in your sig." – Pyrrho
"Try a twelve step program and accept Doctor X as your High Power." – asthmatic camel
"just like Doc X said." – gnome

ImageWS CHAMPIONS X4!!!! ImageNBA CHAMPIONS!! Stanley Cup!Image SB CHAMPIONS X6!!!!!! Image
User avatar
Rob Lister
Posts: 23535
Joined: Sun Jul 18, 2004 7:15 pm
Title: Incipient toppler
Location: Swimming in Lake Ed

Re: Amusing Science

Post by Rob Lister »

Abdul Alhazred wrote:Not off hand.

I suppose those are just show pieces, and spheres aren't going away any time soon.
It's not without its applications however.

Image