When you shine a flashlight into a glass of water, the beam bends. That simple observation, familiar since ancient times, ...

Fall 2025 begins Monday, September 22 at 2:19 p.m. Eastern. Expect faster daylight loss, due-east sunrises, and longer, ...

On Feb. 17, 2026, an annular solar eclipse will be visible from a remote part of Antarctica, forming a "ring of fire" for up ...

A research team led by Academician Zhu Jiaojun from the Institute of Applied Ecology (IAE) of the Chinese Academy of Sciences ...

Arguably, the biggest improvement with the newest Ray-Ban smart glasses is the ability to record in 3K video resolution. That's on par with the more expensive Meta Oakley HSTN model, and footage is ...

"It’s a device called a 'crampon.' Crampons are generally metal spikes that attach to shoes or boots that dig into hard ice ...

Abstract: The expressions and properties of the critical angles of nonuniform plane waves for determining the correct refraction angle at the infinite planar interface of two linear, isotropic, and ...

The research team at Google DeepMind recently conducted an in-depth study on this question. Led by Saman Motamed from INSAIT Sofia University and in collaboration with Google DeepMind, the research ...

Just using simple geometric ideas, Indian mathematicians estimated the height of Mount Everest which was its official height ...

Trigonometric ratios are used to find the unknown side or angle of a right-angled triangle. There are three different trigonometric ratios, \(\sin(\theta), \cos(\theta)\), and \(\tan (\theta)\). Each ...

I'm working with ShadowCam images and need to calculate photometric angles (ignoring secondary illumination effects) using ISIS3. However, I don't have access to the SPICE data or the camera model for ...