You put a lightbulb inside a spinning coffee can with slits at 4 equally spaced spots around the circumference. The photons are projecting out of the slits. As the can spins, the pattern of light and shadow turns and projects on the surroundings.
The outside surface of the can is moving at 1 full turn per second.
10 feet away from the can, the pattern of light and shadow is moving at 31.4 feet per second.
100 feet away from the can, the pattern of light and shadow is moving at 314 feet per second.
At just 2 miles from the can (we are using a BRIGHT bulb), the light and shadow is moving 22,619 miles per hour!
Lightning. I live next to a cell tower that "brings" lightning in and this last strike (250 ft away) induced enough voltage on my cat-5 cables (in wall) to blow up 4 ethernet ports (including a switch and an intel motherboard with onboard ethernet.)
Probably not on the Internet for general access, one might hope. I don't doubt that they are online for Washington University doctors to access. I had ~just~ gotten a chest X ray as well and found a copy of it on the CD as well, so I think they are pure digital with instant access in that regard.
Blood lab monitoring was another nice aspect of being at Childrens Hospital. When you are having a liver transplant, your blood is checked over and over for liver function levels, blood clotting levels, arterial blood gasses, etc. MANY tests throughout the day. These lab numbers were all available on the Windows computer in the ICU and we could freely graph them on screen, compare graphs against each other, etc. and keep watch with everyone else as to what was going on.
2) How is my daughter?
My daughter rcvd liver transplant at age 8 months (due to biliary atresia) and she is now 2, bright happy and beautiful. That said, she is a transplant patient, so she is immunosuppressed and has difficulties associated with that. Right now the challenge is food allergies, I assume as a resut of her immunosuppression therapy.
I went through the stages to donate part of my liver to my infant daughter in 2005. Washington University medical took a full torso cat scan of me, and then gave me a copy of the CD on the way out the door! (I did have to ask for it.)
So I take the CD, and find it has 3D visualization software on it. I ran it and told it to load all the cat scan slices. After it thought about things for a minute, Pow! Full 3D rotatable torso, I could dive in/out up/down whatever. I could change various colors and such to help see embedded structures like biliary tracts of the liver, or the tracts inside the kidneys.
Having been so close to a high end medical operation like a liver transplant for several months, I saw some wicked imaging tools. The ultrasounds they use to monitor my daughters new liver actually colors all the blood flow in blue and red (i.e. venous and arterial, though it is arbitrarily selected I understand) and you can move a trackball around to measure the instantaneous velocity of bloodflow in various veins or arteries in cm/sec with the click of a button.
You can bet that in 20-30 years this stuff is going to be VERY high end and we're going to stand a lot better chance at surviving some bad stuff. "Watch now! The nanobots are just reaching the clogged vessel as we speak, and you can see the bloodflow is already up by 1%, yes look here they have begun to expel the media into the colon!"
Did I read that right? So if we want to get rid of the real Tom Cruise and only use a virtual Tom for, say, 30 minutes of a film, that will run us... $2000 * 60 sec * 30 mins = $3.6 million
I've seen it with my own eyes. I wrote the embedded software (8051 C) for a robotic bone lengthener / deformity corrector in the early 90's, it was powered by Lithium batteries that ran the motors and provided 5V for all the electronics. On more than one occasion (during development) we had Lithium batteries just go up in fire and smoke, for no apparent reason. It caused us a lot of worry to say the least, especially since any bad and ready to blow cells were packed into packs with surrounding cells.. to add to the fire. This was 12 years ago, so I am sure Lithium batteries are better than ever, but it doesn't suprise me to hear about them going up in flames.
This isn't about the quality of figuring, undoubtably that is world class over the entirety of all optical surfaces. This is about the amount of aberrations that affect the telescope particularly near the edge. Astigmatism, coma, etc.
> you're worrying about edge effects then that equipment must be kind of > sh*tty...no?
We're talking about an 8 + METER aperture here pulling down over 4 degrees of sky. That is a ~~~seriously~~~ fast and wide angle lens. If you could buy this for your Canon or Nikon, it would be like (if my calculations are correct) a 400mm f/0.05 lens.
Edge effects and dealing with them must have been a whopper of an optical design challenge. Wide angle lenses can have considerable distortion and tendency towards other aberrations to deal with. This is ONE HELL of a wide angle lens.
I dont blame the natives, it's scary having one of those antenna nearby. I moved into my house here in Alaska 10 years ago, I was a spry 26 years old and felt healthy all the time.
Now, about 5 years ago a cell phone tower was installed in lot adjacent to us, maybe 350 feet from our house (and I telecommute so I am exposed to it all the time.)
After five years of exposure to this tower, I've become very sedentary, I've stopped riding my mountain bike years ago, and I frequently end up working all day sitting in front of the computer with just short breaks. The cell tower has also bloomed my Coca Cola intake level, and I've put on about 45 pounds of unwanted weight. I feel less healthy than ever now.
I've been going to http://www.videosift.com/ lately instead of Youtube. Those whacky users sift through youtube and google video so that I dont have to......
Slashdot Mirror
Amateur (and well off) astro-photographers.
Manufacturers who are probably playing with engineering samples right now:
http://www.sbig.com/
http://www.flicamera.com/
http://www.qsimaging.com/
That sounds like something JAMES BOND might say.
Oh, sorry, thats Scaramunga...
Sounds nice.. if it was people versus people... this is corporations versus people though, I'm surprised they don't have roving death squads.
I like turtles.
http://www.youtube.com/watch?v=CMNry4PE93Y
You put a lightbulb inside a spinning coffee can with slits at 4 equally spaced spots around the circumference.
The photons are projecting out of the slits. As the can spins, the pattern of light and shadow turns and projects on the surroundings.
The outside surface of the can is moving at 1 full turn per second.
10 feet away from the can, the pattern of light and shadow is moving at 31.4 feet per second.
100 feet away from the can, the pattern of light and shadow is moving at 314 feet per second.
At just 2 miles from the can (we are using a BRIGHT bulb), the light and shadow is moving 22,619 miles per hour!
We had a Cisco router wigging out once.
Our Network Admin decided to reset it, and it offered this up:
Kodiak_Rtr uptime is 6 years, 9 weeks, 3 days, 10 hours, 43 minutes
Go Cisco!
I prefer "iDead"
Funny One:
http://www.videosift.com/video/George-Takei-respo
I wonder who will replace our flamboyant navigator.
Lightning. I live next to a cell tower that "brings" lightning in and this last strike (250 ft away) induced enough voltage on my cat-5 cables (in wall) to blow up 4 ethernet ports (including a switch and an intel motherboard with onboard ethernet.)
All my wireless gear is OK
1) are these images online?
Probably not on the Internet for general access, one might hope. I don't doubt that they are online for Washington University doctors to access. I had ~just~ gotten a chest X ray as well and found a copy of it on the CD as well, so I think they are pure digital with instant access in that regard.
Blood lab monitoring was another nice aspect of being at Childrens Hospital. When you are having a liver transplant, your blood is checked over and over for liver function levels, blood clotting levels, arterial blood gasses, etc. MANY tests throughout the day. These lab numbers were all available on the Windows computer in the ICU and we could freely graph them on screen, compare graphs against each other, etc. and keep watch with everyone else as to what was going on.
2) How is my daughter?
My daughter rcvd liver transplant at age 8 months (due to biliary atresia) and she is now 2, bright happy and beautiful. That said, she is a transplant patient, so she is immunosuppressed and has difficulties associated with that. Right now the challenge is food allergies, I assume as a resut of her immunosuppression therapy.
I went through the stages to donate part of my liver to my infant daughter in 2005. Washington University medical took a full torso cat scan of me, and then gave me a copy of the CD on the way out the door! (I did have to ask for it.)
So I take the CD, and find it has 3D visualization software on it. I ran it and told it to load all the cat scan slices. After it thought about things for a minute, Pow! Full 3D rotatable torso, I could dive in/out up/down whatever. I could change various colors and such to help see embedded structures like biliary tracts of the liver, or the tracts inside the kidneys.
Having been so close to a high end medical operation like a liver transplant for several months, I saw some wicked imaging tools. The ultrasounds they use to monitor my daughters new liver actually colors all the blood flow in blue and red (i.e. venous and arterial, though it is arbitrarily selected I understand) and you can move a trackball around to measure the instantaneous velocity of bloodflow in various veins or arteries in cm/sec with the click of a button.
You can bet that in 20-30 years this stuff is going to be VERY high end and we're going to stand a lot better chance at surviving some bad stuff. "Watch now! The nanobots are just reaching the clogged vessel as we speak, and you can see the bloodflow is already up by 1%, yes look here they have begun to expel the media into the colon!"
Did I read that right? So if we want to get rid of the real Tom Cruise and only use a virtual Tom for, say, 30 minutes of a film, that will run us... $2000 * 60 sec * 30 mins = $3.6 million
Amazing sounding... I wonder how they stumbled on it.
Well.. I had a vat of this matter, and I was thinking... I should bombard that bastard with ultrasonic waves.
And that was cool, we all laughed and then Dobie thought it would really put a party in that vat if we fired some neutrons through it.
I've seen it with my own eyes. I wrote the embedded software (8051 C) for a robotic bone lengthener / deformity corrector in the early 90's, it was powered by Lithium batteries that ran the motors and provided 5V for all the electronics. On more than one occasion (during development) we had Lithium batteries just go up in fire and smoke, for no apparent reason. It caused us a lot of worry to say the least, especially since any bad and ready to blow cells were packed into packs with surrounding cells.. to add to the fire. This was 12 years ago, so I am sure Lithium batteries are better than ever, but it doesn't suprise me to hear about them going up in flames.
This is the linku tureLandmineSystems.pdf
http://www.darpa.mil/ato/programs/SHM/briefings/F
And it's on page 8, that these mines self destruct after 30 days unless told to re-extend their period.
Wouldn't you hate to be the guy who forgot to reset all the mines...
Read The Power Point Presentation
These mines deactivate after "X" days and require re-activation periodically to keep them doing their thing.
Hmmm....
"Last tool that came near your mouth?"
[ ] Electro-Cautery
[ ] Mechanical Drill
[ ] CowboyNeal
Just don't cross the beams.
The crab nebula in motion:
http://hubblesite.org/newscenter/newsdesk/archive
Herbig-Haro object 47 in the Orion Nebula, look at this! This is similiar to the "Pillars of creation in M16.
http://en.wikipedia.org/wiki/Image:HH47_animation
V838 expanding in Monoceros:
http://antwrp.gsfc.nasa.gov/apod/ap030402.html
The ebb and flow of clouds around Jupiters Red Spot:
http://antwrp.gsfc.nasa.gov/apod/ap001123.html
Poor, poor Floyd!
This isn't about the quality of figuring, undoubtably that is world class over the entirety of all optical surfaces. This is about the amount of aberrations that affect the telescope particularly near the edge. Astigmatism, coma, etc.
> you're worrying about edge effects then that equipment must be kind of
> sh*tty...no?
We're talking about an 8 + METER aperture here pulling down over 4 degrees of sky. That is a ~~~seriously~~~ fast and wide angle lens. If you could buy this for your Canon or Nikon, it would be like (if my calculations are correct) a 400mm f/0.05 lens.
Edge effects and dealing with them must have been a whopper of an optical design challenge. Wide angle lenses can have considerable distortion and tendency towards other aberrations to deal with. This is ONE HELL of a wide angle lens.
I dont blame the natives, it's scary having one of those antenna nearby. I moved into my house here in Alaska 10 years ago, I was a spry 26 years old and felt healthy all the time.
Now, about 5 years ago a cell phone tower was installed in lot adjacent to us, maybe 350 feet from our house (and I telecommute so I am exposed to it all the time.)
After five years of exposure to this tower, I've become very sedentary, I've stopped riding my mountain bike years ago, and I frequently end up working all day sitting in front of the computer with just short breaks. The cell tower has also bloomed my Coca Cola intake level, and I've put on about 45 pounds of unwanted weight. I feel less healthy than ever now.
I've been going to http://www.videosift.com/ lately instead of Youtube. Those whacky users sift through youtube and google video so that I dont have to......
> In this article is a pic of Bill Gates desk
> with 3 monitors - anyone know what hardare
> he's running to do this?
Come on, your name is McGuyver, you tell us how he's doin it..
is it paper towel tubes doing cross monitor electron channeling?
is it a distribution panel built from paper clips and foil?
Seriously though... Windows has all that built in. Just plug in more video cards, or multi-head cards.