Opinion
Dot Physics on MSNOpinion

Lagrange multipliers made simple: Constraint forces in polar coordinates

Simplify complex physics and math concepts with this easy guide to Lagrange multipliers! In this video, we explain how to calculate constraint forces in polar coordinates using step-by-step examples ...
Digital Camera World on MSN

In focus stacking, your biggest enemy is time – pro macro photographer Stewart Wood shares his surefire tips for razor-sharp close-ups of bugs

Your macro photos aren't sharp? Pro shooter Stewart Wood shares three top tips for razor-sharp close-ups before his talk at ...