The total energy of the ball consists of its potential energy (related to position) plus its kinetic energy (related to motion). To zero out both components, you would have to give a precise value to ...

In October, DJI launched its very first robovacs in Europe. I’ve been testing the top-of-the-line Romo P model, which doesn’t yet have a US release date. It includes a self-cleaning base station, a ...

My grandmother owned almost nothing in her final years — and radiated a kind of stillness that made everyone around her, with their full closets and packed schedules, look like they were drowning.

They show up as a mathematical solution in general relativity, basically as a time-reversed version of a black hole. Some ...

When an electron travels through a polar crystalline solid, its negative charge attracts the positively charged atomic cores, causing the surrounding crystal lattice to deform. The electron and ...

In The Bluest Eye, Morrison struggled to unite the there and not-there in the same figure: Claudia had occupied the positive pole, as it were, and Pecola, the negative. Four novels later, in Beloved, ...

Nearly two decades after the U.S. Congress ordered NASA to find 90% of the asteroids large enough to destroy a city, the ...

All the “normal” matter, like the stars, gas, dust, and people, is called baryonic matter, and it’s basically the tiny visible fraction of a universe that’s mostly invisible and still not fully ...

Medical professionals tell us that Geraldo Lunas Campos was choked to death, but ICE doesn't even bother explaining how he ...