Unexpectedly On YouTube

third law jet demoI don’t know why this possibility did not occur to me before. So let me give you a heads up if you do demos in your lectures. In Physics 100 (which I taught last semester) and in Astro 100 especially, we do a lot of demos to demonstrate various physics concepts. I did a post on the Newton’s third law jet propulsion demo some time ago (linked photo right). My colleague Ed Rhodes did this same demo in his Astro 100 class.

He received an email from one of the students in the class recently saying “Congratulations, you’ve been YouTubed…”.

Apparently, one of the students in the class used his or her mobile phone camera to […] Click to continue reading this post

Vaporstream or no Vaporstream?

Want to have a confidential email conversation about a sensitive issue? There’s not really been such a thing so far, really. Better to pick up the phone and talk in person. Or meet at random near that noisy fountain in the park. But wouldn’t it be nice to be able to send an email and not worry about it being forwarded on, saved – or “reply-all”-ed to the entire organization? I just heard a piece on NPR about a company that claims to offer this service. It acts as the place where you can send and pickup these mails. Once they are read, they are gone. Self-destructed. All very Mission Impossible

The service is called Vaporstream, and you can hear more about it in the NPR story, by going to the NPR site. I can’t give you a link to the clip directly as it does not seem to be on their site anywhere, so perhaps you will just have to listen to the whole program. (All Things Considered- The Monday 22nd Jan show, toward the last half hour or so.)

Interestingly, it seems that there’s only 8 posts tagged with it on Technorati. It’s been a long time since I saw something with so few entries there! I wonder how long that will last?

I wonder if Vaporstream will catch on and we’ll all be using it regularly in a short time. Will it be one of those things, like YouTube and Google, where we’ll all be wondering what life was like before them?

I find myself confused by why this elementary possibility is not a problem: While […] Click to continue reading this post

What Inspired You?

It’s always interesting to hear from others about what set them on the path they’re on, no matter what career path that is. I just read Chanda’s guest post on the matter over at Backreaction. Chanda is a theoretical physicist in training, and so from my point of view it … Click to continue reading this post