Search results
Results from the WOW.Com Content Network
A pictographic traffic sign (top) warning motorists of horses and riders. A pictogram (also pictogramme, pictograph, or simply picto[ 1 ]) is a graphical symbol that conveys meaning through its visual resemblance to a physical object. Pictograms are used in systems of writing and visual communication. A pictography is a writing system [ 2 ...
Ideogram. An ideogram or ideograph (from Greek idéa 'idea' + gráphō 'to write') is a symbol that represents an idea or concept independent of any particular language. Some ideograms are more arbitrary than others: some are only meaningful assuming preexisting familiarity with some convention; others more directly resemble their signifieds.
Symbol Name Meaning SI unit of measure nabla dot the divergence operator often pronounced "del dot" per meter (m −1) nabla cross the curl operator often pronounced "del cross" per meter (m −1) nabla: delta (differential operator)
A computer running a program: the symbols and expressions are data structures, the process is the program that changes the data structures. The physical symbol system hypothesis claims that both of the following are also examples of physical symbol systems: Intelligent human thought: the symbols are encoded in our brains. The expressions are ...
In physics, the term "light" may refer more broadly to electromagnetic radiation of any wavelength, whether visible or not. [4][5] In this sense, gamma rays, X-rays, microwaves and radio waves are also light. The primary properties of light are intensity, propagation direction, frequency or wavelength spectrum, and polarization.
Hazard pictograms are one of the key elements for the labelling of containers under the GHS, along with: [2] an identification of the product; a signal word – either Danger or Warning – where necessary. hazard statements, indicating the nature and degree of the risks posed by the product. precautionary statements, indicating how the product ...
This glossary of physics is a list of definitions of terms and concepts relevant to physics, its sub-disciplines, and related fields, including mechanics, materials science, nuclear physics, particle physics, and thermodynamics. For more inclusive glossaries concerning related fields of science and technology, see Glossary of chemistry terms ...
List of physical quantities. This article consists of tables outlining a number of physical quantities. The first table lists the fundamental quantities used in the International System of Units to define the physical dimension of physical quantities for dimensional analysis. The second table lists the derived physical quantities.