Although not exactly the same height, the two mountains are of similar size and width, with the lowest point between them centered in the frame. The sides facing the viewer are menacingly dark, and add a great contrast to separate land from sky. The mountains are surrounded by partial sunshine and swirling clouds. The clouds themselves are more concentrated in the center of the photograph, dissipating as the eye moves outward in either direction. Having the viewer’s vantage point almost at ground level exaggerates the physical distance between them and the mountains ahead, and also invokes feelings of the grandness of such a scene.
Landscape – Set to the smallest aperture (largest F-stop) possible in order to formulate a bigger depth of field. (Shutter speed will be slower) Night – Enables you to set the camera to the slowest shutter speed possible, but can also turn off the flash and set the fastest film possible. Portrait How do Aperture and Shutter Speed relate to each other? For the same scene, if the aperture is wider, the shutter speed is increased, and if the aperture is smaller, the shutter speed is decreased. This is because if you have a large aperture, more light is let through the lens (fast shutter speed).
All lenses have a principal axis which is a line which passes through the middle of the lens. The focal points of all lenses are in front and behind the lens and are where the light rays initially parallel to the principal axis meet. This directly affects the focal length. Factors the affect focal length | How it affects focal length | Thickness | The thicker the lens is the more the light will be refracted creating a shorter focal length. | Medium | Light travels at different speeds in different mediums, as they can be more or less dense.
Use the fact that the brightness of a point source, such as a star, varies inversely as the square of its distance from an observer to show that the space telescope can see about seven times farther than a ground-based telescope. This situation "Makes sense". The reason that this makes sense would be simply explained by stating that the closer you are to something the easier it is to see. If a ground telescope has to first see through clouds and the atmosphere to see specific stars. That would mean that the Hubble Telescope being in space would not have to work as hard as the ground telescope and also give a better view because of the distance situation.
Some students believe that the Earth’s tilt changes in degree as the seasons change and that the axis points in different directions as the Earth orbits the Sun. In reality the Earth’s axis is always tilted at 23.5 degrees and the North Pole always points toward Polaris (Lambert, 2010). Most of the planets in the solar system have nearly circular orbits, much like Earth. The orbits do, however, have an elongated shape. The orbits of Mercury and Pluto are very elongated whereas the orbits of the other planets are almost circular (Nelson, 2005).
The lunar phases vary cyclically as the Moon orbits the Earth, according to the changing relative positions of the Earth, Moon and Sun. One half of the lunar surface is always illuminated by the Sun (except during lunar eclipses), and hence is bright, but the portion of the illuminated hemisphere that is visible to an observer can vary from 100% (full moon) to 0% (new moon). The boundary between the illuminated and unilluminated hemispheres is called the terminator. Lunar phases are the result of looking at the illuminated half of the Moon from different viewing geometries; they are not caused by shadows of the Earth on the Moon that occur during a lunar eclipse. The Moon exhibits different phases as the relative geometry of the Sun, Earth and Moon changes, appearing as a full moon when the Sun and Moon are on opposite sides of the Earth, and as a new moon (also named dark moon, as it is
Light travels in straight lines When an object is held between a point source of light and a screen, a shadow is formed. If a line is drawn (representing a light ray) joining the light source, the top of the object, and the top of the shadow, this line is straight. 3. Light can be reflected When light strikes a surface, it can bounces back off that surface, Practically every surface reflects some light – if not, we would not be able to see colors. 4.
Lower light frequencies had a more immediate effect than higher light frequencies. Question 2: Does the chart provide information suggesting saturation of rate as a function of increasing intensity? Justify your answer. Yes, the increased light intensity causes results in a slower rate of photosynthesis. This is because of the aquatic environment in which Elodea is found.
When comparing a star's brightness from Earth, it will always appear dimmer than the Sun. This is due in large part to Earth's close proximity to the Sun. Comparing the sun's brightness to Capella's from Earth is unfair because Capella is actually made up of four separate stars. The two yellow giants that make up Capella are quite similar to the Sun. All three stars are yellow giants and give off a similar color of light.
“Rods are sensitive in all levels of light and detect black and white, but not color” (Turley, 2011). This makes rods effective for low light vision “but they only produce a grainy black and white image” (Turley, 2011). Cones on the other hand are all about color and they produce “a sharp color image that is superimposed on the black and white image created by the rods” (Turley, 2011). Light particles called photons activate rods and cones in varying amounts needing only one photon to activate a rod, but several to activate a cone (Turley, 2011). This results in rods being able to detect objects in dim light and making it difficult for cones to detect color in dim light (Turley, 2011).