Marginal rays are the light that passes through an optical system that is away from the optical axis.
Ultraviolet rays
Marginal Revenue Product
Raytrendyme
Silhouettes-The Rays....1957
Ray Rays favourite movie if Twilight:).
marginal rays are those rays which are near the rim of lens and axial rays are those rays which are formed near the axis
In the case of concave mirrors parallel rays, parallel to the principal axis and incident near the pole(axial rays), after reflection will converge to the principal focus.Rays reflected from the marginal portions of the mirror(marginal rays) will converge to points nearer than the focus. Due to this the image formed by a concave mirror of large aperture will be blurred. This defect is called spherical aberration. This defect can be overcome by using parabolic mirrors. In a parabolic mirror all the rays, axial rays as well as the marginal rays, incidenting on it after reflection will converge to the same principal focus. This is due to the geometric property of the parabola, that is parabola allows only one focus.Hence in a parabolic mirror there is no spherical aberration and the image will be sharp and clear.
Marginal net benefits= Marginal benefit- Marginal cost
Parietal
Marginal cost is
In economics, marginal profit is the difference between the marginal revenue and the marginal cost of producing an additional unit of output.
The optimal level of output is where marginal costs = marginal damages.
Marginal net benefits= Marginal benefit- Marginal cost
Three stages of production are increasing marginal returns, diminishing marginal returns, and negative marginal returns.
In regards to marginal vs. non-marginal syndesmophytes. Marginal syndesmophytes (intervertebral bony bony bridges) are more commonly seen in ankylosing spondylitis. Where as non-marginal syndesmophytes are more commonly in reactive arthritis and DISH. Marginal syndesmophytes are delicate + symmetric; while non-marginal syndesmophytes are bulky + discontinuous.
when marginal benefit is equal to marginal cost To be more specific: When the marginal damage cost of polluting is equal to the marginal abatement cost of polluting (or the marginal benefit of polluting, which is equivalent to the MAC)
Marginal cost is total cost/quantity Marginal benefit is total benefit/quantity