True. I take back my comment. I refused to pay for unDock since I'm trying to boycott the App store for as long as I can. For a no-frills, free version, try Ejector: http://www.jeb.com.fr/en/ejector.shtml

unDock ain't free.

Does this work for sex? :-P With all the chemicals being exchanged, sometimes the more you have it, the more you want the other person. Positive (in both senses) feedback, if you will.

You're absolutely right. If the air columns are rigid, then most of the downward weight force of the bag will be transferred to the hips. The straps provide a small horizontal force to stop the bag from tipping. Of course to counter this horizontal component, a small horizontal force exists on the hips also.…

I was all excited to see CheatSheet. But it's 10.7+ only... no good for people still on Snow Leopard.

Imagine the bag on your back, the columns of air are running up and down, so back panel will mould or flex around your back. But the lengths of the columns are quite rigid, so this still distributes the force of the load along the length of your back.

Duck faces are kinda hawt....

I think you mean scattering or attenuation of the laser, rather than diffraction. Unfortunately the quantum efficiency of standard silicon solar panels peak in the infra-red and so they would most likely use infra-red lasers. But infra-red light are attenuated more easily in air. So yea, this effect you mention will…

Can they not have a finder scope with a zoom around 5-10x like on a telescope?

Haha. I have yet decided if long (but simple) math scares people off more, or shorter but "complicated" ones (e.g. one involving exponents). You know it would be particularly interesting for you, and others who have invested/forgone wages to do degrees, is to find out, on average, how we can maximize happiness.years…

Why not use the continuous exponential growth function approximation instead of the geometric series? Easier to look at. :-)

Holy bejesus. That thing is a beast! What's the zoom on the scope for a ultra-long range sniper rifle (M21?). Could they replace it with one of these? Combine it with a CCD + LCD screen with shape recognition which will let you know if you have it pin-point on the target.

You're welcome! It was a good question. It's good to find fellow citizens from the future interested in science.

haha. Sorry, sir! Basically, the light from pluto is fuzzy and very dim. Much dimmer than that from other stars in our galaxy. That why you can see lots of stars in the night sky but not pluto! The brighter something is, the easier it is to study it! A phrase us physicists like to make is, "one over r-squared kills…

Finding exo-planets rely on variations in the parent star's light (either doppler shifts due to wobbling or temporal reduction due to occultation). Pluto does not emit light so we only see if through reflected light. Light from our sun has to travel to pluto, be reflected in all directions (technically called 4pi…

Pluto will probably lose quite a few of its moons the next time it passes through the Kuiper belt. It's chaos out there man! Moon thieves abound!

Yea. I have the same problem. No crowns yet, fortunately; and I refuse to a mouth guard to sleep since I still want to get laid. :P Did your dentist give you any tips? I got advise ranging from a hot towel on the cheeks and jaw to relax the muscles to stretching exercises loosening the jaw before going to bed. Haven't…

Yup, still sucks. My thoughts are too complicated to be limited by 150 characters—I need like 160, come on!

Ermm... anyone else click on iJustine's twitter link, and then followed the link to her youtube page... only to be disappointed? I didn't.

That's the mind-fu*kery that is relativity. Even two photos that are travelling at the speed of light in the SAME direction, sees each other both travelling at the speed of light. Mind-boggling.