rad

• Существительное, обозначающее единицу поглощённой ионизирующей радиации, равную 100 эрг на грамм облучённого материала, или единицу плоского угла, равную углу, стягиваемому дугой, длина которой равна радиусу.

A noun referring to a unit of absorbed ionizing radiation equal to 100 ergs per gram of irradiated material, or a unit of plane angle equal to the angle subtended by an arc equal in length to the radius.

1. Unit of absorbed radiationC1formalscientific

   A unit of absorbed ionizing radiation equal to 100 ergs per gram of irradiated material.

   Рад

   • The patient received a dose of 5 rads during the treatment.
   • Exposure to 100 rads can cause acute radiation sickness.
   • The device measured the radiation in rads per hour.

2. C1formalscientific

   The unit of plane angle adopted under the Système International d'Unités; equal to the angle at the center of a circle subtended by an arc equal in length to the radius (approximately 57.295 degrees).

   Радиан

   • The angle was measured as 2.5 radians.
   • In mathematics, the radian is the standard unit for angular measure.
   • Convert 180 degrees to radians for the calculation.

   Synonymsradian