Screen tones and halftones, which are essentially the same, are used to simulate shades of gray in bitmap, or black and white, images. You can also use them to create special effects, such as the ...

(Nanowerk News) In his 1959 lecture There's Plenty of Room at the Bottom, the US physicist Richard Feynman asked the question: "Why cannot we write the entire 24 volumes of the Encyclopaedia ...

Inspired by nature's ability to shape a petal, and building on simple techniques used in photolithography and printing, researchers have developed a new tool for manufacturing three-dimensional shapes ...