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- A genetic abnormality leaves a person unable to perceive light with a wavelength less than 450 nm. What type of structure is likely been effected? O rod O blue cone O red cone O all of the aboveA typical incandescent lightbulb emits approximately 3 x 1018 visible-light photons per second. Your eye, when it is fully dark adapted, can barely see the light from an incandescent lightbulb 10 km away. How many photons per second are incident at the image point on your retina? The diameter of a dark-adapted pupil is 6 mm.1. Under what conditions can light be modeled like a ray? Like a wave? Wave fronts Opening is very wide opening or device. Opening is about the same size as Figure 1.31 Huygens's principle applied to a plane wave front striking an opening. The edges of the wave front bend after passing through the opening, a process called diffraction. The amount of bending is more extreme for a small opening, consistent with the fact that wave characteristics are most noticeable for interactions with objects about the same size as the wavelength. 1. Light can be modeled as a ray when devices are large compared to wavelength, and as a wave when devices are comparable or small compared to wavelength.
- Why are some medical clinics experimenting with natural lighting the use of water , such as aquariums and water walls ; and music in their facilities ?Photoreceptors present in this structure are sensitive to light O a. Structure E Ob. Structure B Oc. Structure C d. Structure I KHuman color vision is "produced" by the nervous system based on how three different cone receptors interact with photons oflight in the eye. These three different types of cones interact with photons of different frequency light, as indicated in the following chart:
- Figure 1. Ultraviolet Radiation Index across the World. The colors on this map of the world represent Ultraviolet (UV) Index values on a particular day in September 2015. The UV Index is a standardized scale of UV radiation intensity running from 0 (least intense) to 18 (most intense). The y-axis values are degrees of latitude, which range from the equator (0°) to the poles (90° north and −90° south). The x-axis values are degrees of longitude, which range from the prime meridian (0°) to the antemeridian (180° east and −180° west). (Source: European Space Agency,http://www.temis.nl/uvradiati on/UVindex.html.) I. Examine Figure 1 above and answer Questions 1–6. 1. Describe the relationship between the UV Index (the colored bar in Figure 1) and latitude (y-axis). 2. How do you explain the relationship between the UV Index and latitude? (In other words, why does UV intensity change with latitude?) 3. Find your approximate location on the map. What is the primary UV…Plants have several leaf pigments, including chlorophyll (green) and beta- carotene (yellow). The reason that beta-carotene is yellow is because beta-carotene: Absorbs all colors of light except for yellow Absorbs yellow light Absorbs all colors of the spectrum Reflects all colors except for yellowwhat are 3 things a photon of light can do
