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Getting Cold (with thermal imaging)

oritteropo says...

Carefully

None of the endothermic reactions in this video have been suggested as methods to regulate global temperature, because even if they could be scaled up enough to make a global difference they don't address the systems which regulate the earth's temperature.

Some things which have affected global temperatures either up or down are:



Some people have proposed geoengineering to use those same mechanisms, for instance injecting sulphur dioxide into the stratosphere https://www.nature.com/articles/d41586-018-07533-4 or seeding the ocean with iron to fertilise algae https://phys.org/news/2016-03-seeding-iron-pacific-carbon-air.html although there are some concerns about both approaches.

BSR said:

So how do we use it to combat global warming?

Entertainment and frustration can be intertwined

DIY Rocketeer Building Self-Landing SpaceX Model Rockets

LiquidDrift says...

Ughh, make the video when the guy can land it. That's great that he got this far with a music degree, but he hasn't accomplished f*ck all yet! A few Caltech freshman could probably have one landing in a week.

Fantomas (Member Profile)

The Fine Tuning of the Universe

The Fine Tuning of the Universe

Snowflakes Ready For Their Close-ups

A whole night on Paranal Time Lapse

oritteropo says...

It's called laser adaptive optics, they're using it to get more detailed images by taking into account (and correcting for) the distortion caused by the earth's atmosphere (the twinkling effect stars have). You can use a convenient marker star if there's on in the right spot, but the laser lets you do it even when there isn't.

@deathcow can probably point you at a better explanation if you're interested.
>> ^PlayhousePals:

Wonder what the intermittent laser light was for =oI

Weird cloud rapidly changes shape

Fantomas says...

From APOD:
Upon inspection and contemplation, a leading hypothesis for its cause has now emerged. In sum, this hypothesis holds that a lightning discharge in a thundercloud can temporarily change the electric field above the cloud where charged ice crystals were reflecting sunlight. The new electric field quickly re-orients the geometric crystals to a new orientation that reflects sunlight differently.
In other words, a lightning discharge can cause a sundog to jump. Soon, the old electric field may be restored, causing the ice crystals to return to their original orientation.

TL;DR: It was aliens.

HaricotVert (Member Profile)

Truckchase says...

Hah! Nice Thx, I learned another thing today.

In reply to this comment by HaricotVert:
Feynman actually used a strip club as an office and defended it in court.

From Wikipedia:

"In Surely You're Joking, Mr. Feynman!, he gives advice on the best way to pick up a girl in a hostess bar. At Caltech, he used a nude/topless bar as an office away from his usual office, making sketches or writing physics equations on paper placemats. When the county officials tried to close the place, all visitors except Feynman refused to testify in favor of the bar, fearing that their families or patrons would learn about their visits. Only Feynman accepted, and in court, he affirmed that the bar was a public need, stating that craftsmen, technicians, engineers, common workers "and a physics professor" frequented the establishment. While the bar lost the court case, it was allowed to remain open as a similar case was pending appeal.[12]"

>> ^Truckchase:

>> ^mentality:
I wish I could've bought him a drink at a strip club and just listen to him talk all day.

I believe per his own specified criteria in this video he'd be too distracted to think.

Richard Feynman talks about light

HaricotVert says...

Feynman actually used a strip club as an office and defended it in court.

From Wikipedia:

"In Surely You're Joking, Mr. Feynman!, he gives advice on the best way to pick up a girl in a hostess bar. At Caltech, he used a nude/topless bar as an office away from his usual office, making sketches or writing physics equations on paper placemats. When the county officials tried to close the place, all visitors except Feynman refused to testify in favor of the bar, fearing that their families or patrons would learn about their visits. Only Feynman accepted, and in court, he affirmed that the bar was a public need, stating that craftsmen, technicians, engineers, common workers "and a physics professor" frequented the establishment. While the bar lost the court case, it was allowed to remain open as a similar case was pending appeal.[12]"

>> ^Truckchase:

>> ^mentality:
I wish I could've bought him a drink at a strip club and just listen to him talk all day.

I believe per his own specified criteria in this video he'd be too distracted to think.

TEDx Caltech -- The Arrow of Time with Sean Carroll

IAmTheBlurr says...

I love Sean Carroll! I was just at one of Skeptic Magazine's CalTech lectures with Sean in January. It was great! His book "From Eternity to Here: The Quest of the Ultimate Theory of Time" is pretty damn good. It uses a lot of diagrams to help illustrate some of the complexities of the subject and I highly recommend it, BUT, I don't recommend the audiobook because you loose all of the diagrams and the narrator is very dry.

His wife, Jennifer Ouellette, authored "The Calculus Diaries: How Math Can Help You Loose Weight, Win in Vegas, and Survive a Zombie Apocalypse" which I also highly recommend.

He and his wife are really cool!

Richard Feynman Lecture Animated

Philosophy (Blog Entry by laura)

Don_Juan says...

On BBC News today (10/19/09) - http://news.bbc.co.uk/2/hi/uk_news/magazine/8310420.stm

The theory: Going from here to somewhere else without passing through anywhere in between.

The science fiction: Beam me up, Scotty.

In practice: Take two particles of light and entangle them - now you can teleport quantum information - such as what their spin is - from one to the other, instantaneously.

The layman's explanation: Photons, particles of light, have a property called "spin". This can be up, down, or a mixture of the two. Alice has a photon, and she wants Bob to have one with the same spin. She can't send him hers because the Post Office is on strike, and she can't measure her spin and phone him, because the measurement can change the spin.

Fortunately, the last time she met Bob she gave him one photon from an entangled pair, and kept the other. "Entangled" means that the two photons were prepared so that their states were related in a special way. Alice lets her photon interact with her other photon from the entangled pair. This instantly teleports information about the spin to Bob's half. However, he can't "read" that information until a message arrives by more conventional means. A quick call on Alice's mobile, telling him some measurements she has made, now puts his entangled photon into the desired state.

Quantum "teleportation" destroys the original state and can't be used to send messages faster than light. It doesn't actually teleport matter - just quantum information.

Coming to a store near you?: In 1998, the quantum optics group at Caltech used "squeezed light" to teleport the state of a photon in a laboratory. It's now been done with atoms, too. In 2004 Austrian physicists teleported the state of a photon across the Danube river. Within another century it will be an amoeba. But be warned: when you are teleported, your body will be ripped to shreds and rebuilt at the other end.

The answer to all the woes of biofuel (Blog Entry by JiggaJonson)

vairetube says...

sounds similar to

http://www.algenolbiofuels.com/
http://www.technologyreview.com/business/23009/

....

and then, there is this advancement from yet another company
http://www.zymetis.com/
http://www.technologyreview.com/energy/22307/
...

and, to put it all in perspective, there is this from barely two years ago!
http://www.onethread.org/arise/?p=73

"In a recent article, “The Price of Biofuels“, David Rotman predicts that “significant technological breakthroughs” will be necessary to reach a goal in the United States of producing 35 billion gallons of renewable and alternative fuel by 2030. A professor of chemical engineering and biochemistry at Caltech, Fraces Arnold, says there are formidable barriers to the development of new biofuels:

“The bottom line is that you’re going to have to make fuel cheap. We can all make a little bit of something. But you have to make a lot of it, and you have got to make it cheaply. The problem is so huge that your technology has got to scale up.”

Three major challenges cited in converting biomass to biofuel include:
a.Optimizing yield, quality, and transportation of biomass
b.Improving the process of developing sugars from biomass
c.Creating highly efficient biological pathways to convert sugars into biofuel


Professor Gregory Stephanopoulos of MIT believes that a systems approach will likely be required to solve the multidimensional issues associated with creating an inexpensive biofuel generation process; an anticipated solution is a hybrid procedure that incorporates advances in both chemistry and biology.
-------

Well, I guess they solved those problems pretty quick.

stupid education and science, making our health better by helping us be more compatible with our environment.

understanding how to identify a problem, seeing that there is a solution and then implementing the solution.... what is this country becoming? Comm-rape-ulist ChiRussia? BURY YER GUNS AND YER COMBUSTION ENGINES!! THEY TOOK YER FUEL!!! TUK ER!!! DEMOCRATS ARE RUINING EVERYTHING RABBLE RABBLE



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