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imperishable    
a. 不灭的,不朽的

不灭的,不朽的

imperishable
adj 1: not perishable [ant: {perishable}]
2: unceasing; "an abiding belief"; "imperishable truths" [synonym:
{abiding}, {enduring}, {imperishable}]

Imperishable \Im*per"ish*a*ble\, a. [Pref. im- not perishable:
cf. F. imp['e]rissable.]
Not perishable; not subject to decay; indestructible;
enduring permanently; as, an imperishable monument;
imperishable renown. -- {Im*per"ish*a*ble*ness}, n. --
{Im*per"ish*a*bly}, adv.
[1913 Webster]


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  • Light Reflection and Refraction - Science Primer
    The interactive illustration at the top of this page explores patterns of reflection and refraction of light rays that hit a variety of interfaces at different angles of incidence Below is a video overview of the concepts covered
  • 1. 10: Reflection and Transmission at an Interface
    When an electromagnetic field is incident on an interface between different media, the field is partially reflected and partially transmitted An important special case is that of a monochromatic plane wave which is incident on a planar interface as in Figure \(\PageIndex{2}\)
  • CHAPTER – 10 LIGHT-REFLECTION REFRACTION - ReadAxis
    In this chapter we will study the phenomena of reflection and refraction using the property of light i e straight line propagation (Light wave travel from one point to another, along a straight line)
  • REFLECTION AND TRANSMISSION AT AN INTERFACE - UVic. ca
    When a ray of light encounters an interface between two media of different refractive indices, some of it is reflected and some is transmitted This chapter will concern itself with how much is reflected and how much is transmitted
  • Matthew Schwartz Lecture 15: Refraction and Reflection
    Plane wave entering and emerging from a medium with different index of refraction Now let us ask what happens when light enters a medium with a different index of refraction at an angle Since we know the wavelength of light in the two media, we can deduce the effect with pictures
  • The Refraction of Light - Florida State University
    Refraction is an effect that occurs when a light wave, incident at an angle away from the normal, passes a boundary from one medium into another in which there is a change in velocity of the light Light is refracted when it crosses the interface from air into glass in which it moves more slowly
  • Reflection and refraction
    Refraction is the change in direction of propagation of a wave when the wave passes from one medium into another, and changes its speed Light waves are refracted when crossing the boundary from one transparent medium into another because the speed of light is different in different media
  • 5. Reflection, refraction and polarization - University of Delaware
    Figure 5 1 illustrates what happens when electromagnetic radiation encounters a smooth interface between dielectric media We see two phenomena: reflection and refraction (a specific type of transmission) The angle of reflection, θr, equals the angle of incidence, θi, where each is defined with respect to the surface normal
  • Reflection, Refraction, and Dispersion – Physical Science
    One can imagine that light incident on the surface is absorbed, and then re-radiated by oscillating electric dipoles at the interface between the two media The refracted light is emitted perpendicular to the direction of the dipole moment; no energy can be radiated in the direction of the dipole moment
  • 24. 2: Reflection, Refraction, and Dispersion - Physics LibreTexts
    One can imagine that light incident on the surface is absorbed, and then re-radiated by oscillating electric dipoles at the interface between the two media The refracted light is emitted perpendicular to the direction of the dipole moment; no energy can be radiated in the direction of the dipole moment





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