I found this website: http://www.physics.umd.edu/lecdem/outreach/QOTW/active/. After spending some time in it, I came to the conclusion that it is worth visiting periodically.
The idea is actually pretty good. They post a new question every week, and "give" you one week to figure it out. The cool part of it is that they complement the questions by adding pictures or videos. Then, they publish the answer a week later including more videos or pictures as "proof" so that no doubt remains!!!
The website is maintained by the Physics Department at the University of Maryland,.... if you guys are reading: good work! keep it up!!!
14 hours ago