Oh, I wouldn't use centripedal force in conversations like this. I would make my sentence clearer and say, "I don't think we get forces that anyone could confuse with gravity at .011111 rpm." But yeah, I know the physics.

Yes, but the rotation speed, when rotating, will be 90 minutes per one rotation. Which is to say, .011111 rpm.

I don't think we get gravitational forces at .011111 rpm. I suspect you wouldn't even be able to feel it as motion.

For my 20-something bros, 120 gig external USB drives. 4500 RPM but small and need no external power supply - easy to throw in a coat pocket. And NewEgg gets stuff to me the next day UPS ground. They are amazing.

Ring bottle opener - http://www.thinkgeek.com/caffeine/accessories/756e/ for a buddy

Sony Ebook reader for me off EBay - last gen. $160. It's nice to have a single-threaded non-networked device. I buy my own gadgets..

my mom's BF is getting a ton of stuff from the Shameless Commerce Division of Car Talk - http://www.shamelesscommerce.com/

Our friend who married us is getting an Eye-Fi http://photojojo.com/store/awesomeness/eye-fi-wifi-memory/ . The plan is to setup a camera to upload to flickr and do a slideshow in realtime at the ChrismaHanaKwanzika party.

Sigh... I'm still rocking a 2.0 ghz single core processor with only 1 gig of DDR ram and a 40 GB hard drive. Don't know how fast it is, but it's probably only 4200 rpm. Then I have my 7800 GS (which is an AGP card) and my vastly outdated Audigy Value sound card.

I use msconfig to shut literally almost everything down on XP, leaving only Plug and Play and Windows Audio. Even still, I can't keep up with a lot of new stuff, and as a life-long PC gamer (started when I was 3 - fond memories of Doom and Wolfenstein 3D), with no game consoles, I'm in pain.

At least HL2 will run for me.

Got the Bioshock demo to run alright, but haven't bought the full game.

If I had to guess I wouldn't say this is 10000 frames per second, but rather the same as the water drop strobe light thingy, if you take a picture every 1/10th sec at an engine running at 1000 rpm (or 60,000 rev/s) you could combine pictures to make an animation because the combustion is relatively repetitive enough combine frames from later.

There is an old joke in the aviation community that helicopters don't produce lift, they are so ugly that the earth repels them. This video could be used as evidence to prove that correct.

"Yeah, there's no way that's an optical effect. I agree with garsh and BoneyD. There would be major blurring on the blades, and the rotation would be pretty obvious and steady as the throttle changes, like it does when you look at wheels on a car."

Unlike the props on a plane and wheels on a car, the blades on a helicopter do not change RPM during flight. They stay at a constant RPM, and the rotor is tilted and the blade angle is adjusted for maneuvering.

You see this effect a lot on digital camcorders with a "sports" mode. I took a friend flying once and he brought his Sony camcorder. When he had it in normal mode, the props in the video were blurred, but when he switched it to sports mode, it recorded at a higher FPS and in the video the prop appeared to be slowly spinning backwards.

The fact the Hind has 5 main rotor blades means it doesn't have to spin as fast.

This youtube movie shows a stroboscopic effect when filming a true Hind.
http://www.youtube.com/v/eLOXRQzkFCc

Using a high grain film or digital could produce what you're seeing on the above sift... unfortunately... when flying like that, the pilot would be changing the rpms personally, or at least the different air pressures would "turn" the rotor with respect to the camera shutter.

I say rendered using the soundtrack from the youtube movie I linked to. Nice one tho...

You'll remember the modified torch that lights up the lumuens, and newspaper?? Well, why not a blender with depleted uranium blades, a 5000 RPM variable speed turbine engine, and a carbide-titanium vessel...and blend whatever the fuck!
Puree' your wallet , for example.

Hard disk-fu!

That's excellent! Of course, that's an old slow hard drive. I wonder what would happen with a 10,000 RPM, or even one of those new 15,000 rpm models? They might not stop at the wall.

The 5 series has a HUD as an option, but it does not have night vision on it just speed, gear, RPM, and such.

Krupo: I was thinking the same thing while watching it. Well, Wikipedia posits that the drum magazine can take either 50 or 100 rounds. Fire rate is 600-800 rpm.

A maximum ten seconds of sustained firing will empty the 100 round magazine.

The tommies saw about 4 secs' use in the hands of the assassins, ~12 more while shooting the second assassin in the back, and another 8-10 while firing bursts down the road.

All told, he'd probably need three magazines to uncliche the scene. ;-)

OH Oh Oh! I know why they do that! Excuse me whilst i bore you with this.

The boeing 747 is a very heavy plane fully loaded, and st martins has a short runway. If the 747 was to take off normally, it would run out of runway. To stop this from happening, they taxi to the end of the runway and apply the parking brakes. After the brakes are applied, they bring the engine up to full RPM. When full RPM is reached, the brakes are released and the 747 accelerates at incredible speeds.

Sorry, just wanted to tell someone that.

No one was hurt.

This is what the author had wrote on the description:

"I thought you might find it interesting to see a crash from the cockpit of an airplane. Pretty interesting; it is an instructor pilot in the rear and a student in the front seat of an F-16.

A "Bird Strike," as seen through the Heads Up Display (HUD). You can see the bird flash by just prior to impacting the engine. You can hear the aircraft voice warning system telling them they have a problem and referring to the "D-6 NL" which means there is no engine RPM. They made 2 attempts to relight the jet engine, but evidently there was too much damage from the bird strike and they had to get out.

These guys were very cool; note the heavy breathing... they certainly flew longer than one would expect before ejecting. Airspeed can be observed on the HUD's upper left corner. It goes down to the low 120's as they struggle to get the engine going again, but as the plane noses over and dives to earth it increases to at least 175 just before impact.

It just goes to show how quickly your day can go to pieces - 45 seconds from strike to ejection.

All and all, not bad. They ran the emergency checklist, made two relight attempts, and picked out a plowed field for impact before ejecting. You can follow the audio attached to it and hear the conversation between the pilot and instructor pilot and then the tower including the pilot saying they were punching out. The tower didn't seem to completely understand it all, and missed the significance of the last transmission. His last radio call, he's talking to an empty aircraft.

The video continues until impact, even after they both eject. A classic "buying the farm" as you can see the plow rows get bigger. A real nice job from the aircrew by keeping their cool and turning the aircraft away from populated areas."