Yes. I have worked in some projects involving balloons and that the main constraint for our tests' duration. Even if you have a really good seal in the balloon's neck, the air (we used Helium, it's probably what they'll be using) is bound to escape through the holes in the actual rubber membrane. We couldn't get tests… » 10/19/13 1:34pm 10/19/13 1:34pm

Well, being from Portugal I learned English and French in school. I also speak Spanish, which is awfully similar to Portuguese, and understand a little bit of Italian. Apart from that, I started learning Russian an Ukranian during the last two years of high school. I still want to learn German and possibly Mandarin,… » 3/21/12 4:34am 3/21/12 4:34am