By observing tiny ripples in spacetime called "gravitational waves" that propagate away from colliding black holes, ...

The rules of the air are the foundation for safe flying. It is good practice to refresh and test your knowledge of the rules ...

Nikon has announced the Nikkor Z 35mm F1.2 S, the latest in its lineup of full-frame fast primes. It's an interesting option ...

When hundreds of eerily perfect circles were discovered on the bottom of the Mediterranean Sea, theories abounded about what they could mean. Four years of underwater research revealed a lost world.

The conventional concept of image, which applies, for example, to light microscopy ... gives the EPWF — the wavefunction at the exit plane — of the specimen. At a time when second-order ...

At the end of the 14 th century there were two types of mill in the Netherlands: the post mill, which was a ground winder, ...

Every now and then, I read a book which hits me with such a profound impact that, like Paul on the road to Damascus, I find ...

For example, the adsorption isotherm of phenol and caffeine in ... D denotes a bound region in the plane over which the integral is calculated. Similar to eq 2, this is now applied to each energy ...

In this paper, space objects can be divided into roads, rivers, lakes, and other objects, and the shapes of entities can be divided into points, lines, and planes. A point is a ... the number of main ...

In case the name didn't make it clear enough, symmetry photography involves creating images that featured mirror-like scenes, subjects or compositions. Sometimes the effect is more overt, other times ...

Symmetry is when one side of a shape is a mirror image of the other side. Lots of buildings and everyday objects use symmetry because it looks appealing to the human eye. Watch the video below ...