PSYB51H3 Chapter Notes - Chapter 2: Visual Acuity, Opsin, Ophthalmoscopy
Document Summary
Chapter 2- the first steps in vision: from light to neural signals. See companion website for practice quizzes and activities! *light is made of waves when it moves around the world, and made up of photons when it is absorbed. *as a wavelength varies in the visible spectrum, the colour we observe changes from violet (400 nm) through the whole spectrum of the rainbow up to red (650 nm) Absorb: to take up light, noise, or energy and not transmit it at all. Scatter: to disperse light in an irregular fashion. Reflect: to redirect something the strikes a surface- especially light, sound or heat- usually back toward its point of origin. Transmit: to convey something (eg light) from one place or thing to another. Transparent: allowing light to pass through with no interruption, so that objects on the other side can be clearly seen. Cornea: the transparent window into the eyeball (located at the very front of the eye)
