Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...

Are flat pedals better if the platform is convex? Concave? Why not both? While the internet argues about which pedal design provides the best grip and feel, OneUp has been testing prototypes of their ...

Are you looking to make the most of this month's new moon but are concerned about the cold? Make lens-fogging a thing of the past with one of the best lens heaters. When you purchase through links ...

It is well-known that eyeglasses and other vision correction tools are the key to improving eyesight for many people worldwide. Still, you might not have known that they may also significantly ...

Flat reflective surface reflecting erect and virtual images. Spherical Mirror: Curved reflective surface, divided into concave (inward-facing) and convex (outward-facing) mirrors. A lens ...

In the case of all other locations, convex lenses produce real images. 120. How will you distinguish a concave lens from a convex lens experimentally? Answer: If the given spherical lens produces ...

Light passes through a series of convex and concave glass elements in a tube ... The disadvantage of using a tripod is the lack of an erect image angle, which can be overcome using a digimount ...

He replaced the concave lens with a second convex one. As a result ... design does have the downside of producing an upside down image, but in astronomy that doesn't really matter.

improved upon the convex-concave design with a pair of convex lenses. The advantage was a wider field of view and higher magnification, but the images appeared upside down. Still, telescope makers ...