Clepsydra (Water Clock)
What should be the shape of a water clock bowl?
Airplane Banking
Does your coffee pour out of the cup when the airplane turns?
Balancing a stick
which is easier to balance: A bottom heavy stick, or a top heavy stick? And why?
Drowning car
What should you do if trapped inside a drowning car? Try to open the door? or shatter windows?
Point of no-return in diving
Free-divers, with lungs full or air, lose their buoyancy at a specific depth. Unless they quickly swim up from that death depth, they will sink faster and faster ...
Decimal time?!
Should SI extend to more realms, e.g. number of hours in a day? Number of days in a week?
Physics behind Surface Tension
How Exactly Do Intermolecular Forces Result in Surface Tension?
Predicting Future
Can we, one day, be able to predict the future very accurately? Or laws of nature prevent this to be realized forever?
Decimal system origin
Why does everybody use decimal numeral system?
Decimal or non-decimal?
Is decima numeral system really the optimum? or maybe we should think to change?