#واژه_تخصصی_فیزیک⚛

🔤 لغت:
Concave

📃معنا:
مقعر، کاو

📖Definition:
1. The definition of concave is curving inward.
2. Curved like the inner surface of a sphere.

📚Mathematical Definition:
1. (set theory, not comparable, of a set) not convex; arranged such that there exist at least two points for which a straight line between these points does not lie wholly within the set.

2. (functional analysis, not comparable, of a real-valued function on the reals) having an epigraph which is a concave set.

📝Origin:
1. Middle English and Old French from Classical Latin "concavus".

🔡 Example:
1. Concave Lenses are used in the treatment of myopia or shortsight.
2. You stand in a dark room looking at a round concave surface perhaps five feet in diameter.

🔈 تلفظ:
kong.keiv

پیوست:
#واژه_فیزیک، #فیزیک، #واژه_تخصصی، #لغت_تخصصی

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