rad

• اسم يشير إلى وحدة قياس الجرعة الممتصة من الإشعاع المؤين، وتساوي 100 إرج لكل غرام من المادة المشععة، أو إلى وحدة قياس الزاوية المستوية التي تقابل قوساً طوله يساوي نصف قطر الدائرة.

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.

   راد

   • 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).

   راديان

   • 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.

   المرادفاتradian