sugár
Sugár is a Hungarian noun meaning a ray or beam. In geometry it denotes a half-line that starts at a given point and extends indefinitely in a single direction. In physics and optics, sugár refers to a stream of energy that travels from a source, such as a beam of light or a ray of radiation. The term is used in both everyday language and technical contexts.
In common expression, examples include fénysugár (a ray of light) and röntgensugár (X-ray). The related adjective
In geometry, sugár is defined as a part of a line with a fixed starting point and