2D refers to objects or images that show only two dimensions; 3D refers to those that show three dimensions. Because reality exists in three physical dimensions, 2D objects do not exist. However, they can be portrayed in images and art.
2D and 3D generally refer to paintings, drawings and computer-generated images. While nothing real truly lacks a third dimensions, items can be depicted without showing a third dimension. The terms are sometimes used to determine whether a depiction of something is presented with clear signs of a third dimension. A drawing with a shadow, for example, might be said to be in 3D.
However, the term is sometimes used to refer to the medium of the depiction. Paintings, photographs and computer images are in 2D by this definition, regardless of what they depict. Sculptures, on the other hand, are in 3D. This distinction is common in the art world.
Further complicating matters are 3D films and drawings. By sending different images to each of the eyes of the viewer, images can simulate the third dimension. These depictions can be accurate, and the effect is enough to fool the brain. However, the depth dimension is only simulated, so some claim that these images are still 2D.Learn More
Sulfur has 16 electrons. It also has 16 neutrons and 16 protons. Sulfur has the chemical symbol S and is a non-metal. It belongs to group 16 on the periodic table.Full Answer >
Brownian motion is caused by the impact of fluid molecules or atoms in rapid and random motion from heat on small particles suspended in the fluid. Brownian motion, which tends to disperse particles as widely as possible, is the major force in diffusion. Brownian motion occurs in small suspended particles, regardless of any overall movement or current in the suspending fluid.Full Answer >
The quantization of energy refers to the absorption or emission of energy in discreet packets, or quanta. As the intensity of electromagnetic energy increases or decreases, it steps up or down from one quantized level to another, rather than follow a smooth and continuous curve. The quantization of energy, also known as "quantum theory," describes how energy can only be lost or gained in multiples of a smallest possible unit of energy, which is referred to as a "quantum."Full Answer >
Infrared radiation is a segment of the electromagnetic spectrum typified by its long wave lengths. These waves are substantially longer than the shorter wave lengths of other electromagnetic radiation, such as X-rays and gamma rays, and contain less energy than short wave lengths, making them less dangerous to organic life.Full Answer >