Video Definition and 702 Threads

Marcolli has been a frequent collaborator with Alain Connes, and is now math prof at Caltech. Since NC geometry has yielded the Standard Model particles, plus some predictions, there is interest in basing the NC matter on spinfoam quantum geometry http://pirsa.org/11020110/ Spin Foams and...

http://www.ted.com/talks/nigel_marsh_how_to_make_work_life_balance_work.html?utm_source=newsletter_weekly_2011-02-08&utm_campaign=newsletter_weekly&utm_medium=email" Nigel has a dry sense of humor, even though a few lines I have heard in other contexts before, IMHO, worth watching...

Homework Statement http://www.khanacademy.org/video/2-dimensional-projectile-motion--part-3?playlist=Physics Skip video to 4:40. He says that the average velocity in the horizonatal direction is the same as the initial velocity (7.07m/s) because it doesn't change. but wouldn't the velocity...

http://www.medicalnewstoday.com/articles/213929.php

I'm surprised we don't have an Equipment category on PF. Much of working with Physics is equipment for monitoring, testing, calculating, etc. Then there's not just the equipment (hardware) but software, operation, source of supply, repair, calibration, rentals, etc. So let me throw that in the...

Hey Guys, Does anyone have a general idea of the circuit needed to generate a composite video signal?

I recently watched Fourth Kind and was left wondering if it's possible to have statics in captured video. From my understanding, static is mostly associated with radio interference when signals interfere with one another on similar frequencies. Since a captured video records visible light (part...

Hi! Consider a high-speed camera set up to record an explosion and the resulting shockwave emanating from the explosion. In the same frame you can see the shock wave as well as people in the distance. Is it true that the people in the distance wouldn't hear the sound of the explosion until...

I need to do some editing of videos I've got in .VOB format from a minicam. I need to do the usual fading, video marking in and out, and inclusion of still slides. One of the more sophisticated things it looks like I need to do is to crop dynamically over time (i.e. crop the video down to...

Hey guys. I just stumbled upon this site which I find really awesome. Its called Academic Earth. This site has a collection of video lectures on many different subjects: Math, Science, Engineering, History, Philosophy and many more. It has lectures from M.I.T, Berkeley, Harvard, Yale and more...

OK, 'fess up. Which one of you made this? I'm sending it around to the other grad students in my program.

Hello, I am currently creating an ongoing series of Topology video lectures and looking for students of an appropriate level for some accurate feedback. They are much in the style of the popular Khan Academy. Link Thank you for your time.

I want to make an RC car that I can control in two ways. One would be over local wifi and I am actually watching the car and controlling it with my iPhone using touchOSC. The Arduino is using the http://asynclabs.com/" to connect to the wireless network at home or Ad-Hoc when no network is...

what's the best way to extract video from damaged VCDs? the final video needs to be in mov, mpg, mp4, wmv or similar format...

https://www.youtube.com/watch?v=Zw9UUuUpmcQ Seems like it is faked, but I dunno. BTW, the uploader explained that the noise in the background is a howler monkey and you'll hear the guy making a howling sound back early in the video. Sounds strange, but anyway. That's the spider's exoskeleton...

Hello, I am searching for the equipment used in the Youtube/BBC video posted below. I have looked for contact info at Cologne University, but a lot of their sight was not translated over to English. Specifically, I am searching for the barrier used in the video. Also I hope this is the...

ok so this guy throws up a cup of hot water at like 45 below zero F. And I am not sure what exactly is going on . Does the water first evaporate really fast and then freeze into tiny ice crystals. When its really cold outside the humidity is really low, so does stuff evaporate really quickly.

what is the meaning of Video bandwidh for rf detector?

Are there any? If so, which are the best ones? (Upper Division Undergrad)

If one were to travel towards a star at the speed of light, and the spaceship beamed to Earth a continuous video stream of the voyage with an on board camera running not @ 25 FPS but at 300,000,000 FPS; Then what will the person on Earth watching the streaming video see as the voyage progressed...

Greetings and excuse me if my question doesn't belong here. I've been searching for quite a while but I can't find a video that matches this describing: A footage of a more than 5 minutes lasting video in a gravityless environment. The camera may not stop recording once during the 5 minutes...

Im not sure what this is: http://www.dumpert.nl/mediabase/1092641/c3edd207/curious_stroboscopic_effect.html Maybe this is an explanation for some sightings seen by airplane passengers. Or maybe it is an artifact of a bad videocamera and you wouldn't see it with the naked eye.

Peter Woit ("Not Even Wrong" blog) reported today on two recent talks by Edward Witten which are available video online. Here is the link to Woit's blog, which gives an brief overview of what the talks are about. http://www.math.columbia.edu/~woit/wordpress/?p=3107 In case anyone is...

http://www.bbc.co.uk/iplayer/episode/b00t6xzx/Treasures_of_the_Anglo_Saxons/ Well worth watching.

what do you think of this explanation about calabi-yau and other 4 dimensions 1) http://www.youtube.com/watch?v=aed3SGEifpE&feature=related 2) http://www.youtube.com/watch?v=BTY8aqjBotQ&feature=related 3) http://www.youtube.com/watch?v=TUl_8L86d2M&feature=related is it correct? or is...

So, after quite a while of internet browsing over the past couple of months I've accumulated quite a hefty collection of resources for learning first year physics & I think it's about time I posted it as I've found a few of these resources practically nowhere on the internet. As far as I can...

Hi, I have a tiny (.6"x.6"x.125") 2.4ghz video transmitter that puts out about 1mw or rf power. I want to severely reduce the output power in order to reduce the range of this transmitter. instead of a few hundred feet line of sight range I would prefer no more than 10ft, and as little as 2...

http://www.readnrock.com/?p=38 It's probably been posted before, but I still find it interesting. I can easily switch between the two, but I saw it going clockwise first. I don't believe that this proves my iq is over 160 (I don't believe in iq tests anyway...) I'm going into...

"Nerds Rock" I thought this was cute/funny. Go youtube. http://www.youtube.com/watch?v=iUidEDWDlcA"

Video encoding hardware is cheap and inexpensive. Even the tiniest trickle of bandwidth is enough for crisp, sharp, colourful moving images. http://www.boston.com/bigpicture/2010/05/checking_in_on_saturn.html Browsing these images you really wonder our cameraman in space is just taking...

I need to illuminate a scene for a video inspection. Unfortunately it's a big scene and I don't have unlimited power. I though of using a strobe light triggered at 30Hz (or ideally 60Hz) and synced from the frame pulse of the video camera - so I get a bright pulse of light as each image is...

Consider the following music video: And describe what kind of theory and/ or which Law of science your favorite part is about?

Here are some cool video lectures on introductory QFT: QFT Video Lectures

Henderson gives a good talk. He's been working with Abhay Ashtekar on reformulating loop cosmology as a spinfoam-like path integral---also using GFT (group field theory) where a parameter shows up that may have physical interest (possible connection with the cosmological constant). He got...

http://pirsa.org/10050022/ The Emergence of Gravity Erik Verlinde 12/05/2010 "Theoretical insights originated from the study of black holes combined with developments in string theory indicate that space time and gravity are emergent. A central role in these developments is played by the...

http://pirsa.org/10050002/ Deformations of General Relativity Kirill Krasnov 2010-05-05 "I will describe a very special (infinite-parameter) family of gravity theories that all describe, exactly like General Relativity, just two propagating degrees of freedom. The theories are obtained by...

Anyone know of a good 10-20 minute video on space travel? Anything that provides sufficient information on space crafts, progression of space travel, future space travel? Much appreciated, thanks. I need to show a video for my Space Travel seminar.

I read, some time ago, a research unveiled by the Centers for Disease Control and Prevention (CDC) that claims video game players were more likely to be overweight, depressed and introverted. but this article says...

Thought you might like this... This http://www.ted.com/talks/stephen_wolfram_computing_a_theory_of_everything.html?utm_source=newsletter_weekly_2010-04-27&utm_campaign=newsletter_weekly&utm_medium=email" by Stephen Wolfram is about 20 minutes long, but the most interesting parts are from...

There is a Harvey Mudd College first semester real analysis course posted at http://www.youtube.com/user/Learnstream, based on the classic text Principles of Mathematical Analysis (Baby Rudin), by Walter Rudin. Professor Francis Su, who delivers these lectures, does a great job helping to tie...

More goodies from NASA. This time around they've been able to capture some remarkable high-resolution photos of the Sun. They also got footage of the Solar Prominence Eruption on March 30, 2010. http://edition.cnn.com/2010/US/04/21/solar.observatory.images/

First, the assembly, time lapsed of course... http://www.youtube.com/watch?v=kVrUR_SOykk&feature=related" This is a blow up of the Transition Radiation, Semi-conductor and Pixel Detectors, innermost Atlas detectors. Description of layers of detectors and what each one is...

Not sure if this has already been posted on the board, but here is another fascinating bit of information collected by the Cassini spacecraft as it floated near Saturn. Check the link below for pictures & the video...

Hello, I am having trouble understanding an example shown on youtube regarding pulleys. http://www.youtube.com/watch?v=vSsK7Rfa3yA#t=3m0s In the example in the video above (I linked to the time when the example starts), the narrator uses an example where he pulls a rope with 5 Newtons for 2...

I know I used to love the song playing int he background as a kid but I can't remember anything about it! Soooo... can someone please ID it for me? Maybe a Bruce Springsteen song?

Watch my video...or else! Some fellow students and myself recently entered a portable fuel cell competition for the international association for hydrogen energy. As part of this competition, we had to make a video presentation and put it on youtube. We are trying to get as many views and...

I want to talk about video drivers. When I go to my device manager I have no 'known' video drivers. There is a tab that is titled 'Other devices'. When I click on it, there is a driver titled "Video Controller (VGA Compatible)". The manufacturer is unknown and I cannot install any software to...

Made my stomach queezy first time I've seen this. Explicit VIDEO from Iraqi War shows the death of 12 people including two Reuters news staff [link and quote deleted] I'm not sure if its because those enlisted Army guys become pilots or its so hot in Iraq that you can't think clearly...