The direct reaction of triplet oxygen with a singlet organic molecule would violate a fundamental principle of physics, the conservation of angular momentum, and thus is 'spin-forbidden'.

UNIT 5: ROTATIONAL MOTION Centre of the mass of a two-particle system, Centre of the mass of a rigid body; Basic concepts of rotational motion; a moment of a force; torque, angular momentum ...

How is matter different from mass? These and other questions about the deepest levels of physics, answered inside.

Credit: Mingjian Cheng, Wenjie Jiang, Lixin Guo, Jiangting Li and Andrew Forbes Optical metrology has long relied on interference principles, but a recent review highlights how orbital angular ...

The principle of equal and opposite reaction is another ... Despite not having mass, photons are affected by gravity. Photons also have momentum: since photons interact with electrons, light ...

He made his unofficial debut at Paris Haute Couture Fashion Week last June, but his growing social media presence - 5.5 ...

Researchers at Tohoku University have achieved a significant advancement in opto-magnetic technology, observing an ...

Emmy Noether showed that fundamental physical laws are just a consequence of simple symmetries. A century later, her insights ...

XRP's weekly chart with RSI. (TradingView/CoinDesk) XRP's 12-month RSI has risen to 92, the highest level since October 2017, indicating that the momentum observed over the past 12 months is the ...

The Army is already nearly halfway to meeting its ambitious goal of recruiting 61,000 active-duty soldiers during this fiscal year, according to internal data reviewed by Military.com. The service ...

Here are my thoughts on the game and the Ravens' outlook heading into the postseason, all in 50 words or less: How much does momentum count in the playoffs? The Ravens have won four straight.