Hi Robert,
Is there something wrong with asking one's friends to sign up and share their experiences and give us an upvote. Not sure why you're going through all this trouble to figure out what is generally an obvious thing for any site seeking traction to do.
"Is there something wrong with asking one's friends to sign up and share their experiences and give us an upvote."
If you aren't aware of why asking your friends to post reviews about your site (without disclosing their relationship to you) is unethical, I'm not sure I can explain that to you.
well, i just created this user after i sign up to that site and getting a wtf moment and freaked out because i can't sign in to my gmail .. anyone successfully registered?
Early brain scans could help at-risk individuals receive voluntary intervention (medication, therapy etc.) to help them avoid trouble later on. One would hope that the results of these brain scans would be confidential to avoid stigmatizing individuals.
Treating violent and sexual offenders as human beings who are mentally ill instead of writing them off as evil monsters would be a huge step in the right direction for the legal system and society in general.
The amount of lift you would get from such a small amount of helium would be practically negligible compared to the weight of the aircraft. Lighter-than-air craft require an enormous volume of helium/hydrogen - due to the cross-section of such a craft, the speed of travel is severely limited by drag. Basically, an aircraft uses wings OR lighter-than-air gas - it can't use both.
An airfoil (wing) creates lift when air flows from the leading edge to the trailing edge, and the speed of this airflow is one of the factors which determine how much lift is generated. A strong tailwind will interrupt the airflow, induce turbulence and decrease lift. Thus, an airfoil moving into a headwind will generate greater lift than one moving through a tailwind.
