Focal Length of Lenses Lab - University Physics Ii

Explain the role of the Kinetoscope during the period of cinema's invention. How did the Kinetoscope modify the capabilities of earlier camera and projection systems?

Figures 1.6 and 1.7 illustrate how the position of the dots can be used to compute the eye's wavefront aberration. Figure 6 is a magnified view of a single lenslet shown in Fig. 3, with a portion

· The “stereoview” card viewer was a device much like a pair of glasses mixed with a toy image viewer that small children use today. In some cases, the card would slide into place in front of the lens to be perfectly in focus. Other times the viewer would simply hold the card in front of the viewer and view the card that way. (zeller)

The first three we had looked at was the Phenakistoscope, Praxinoscope and the Thaumatrope. Viktor demonstrated all three methods which was fascinating. These popular devices were inspired in the nineteenth century by Peter Mark Roget’s theory of visual persistence, which held that our eyes retain an image for a fraction of a second, permitting a series of still images to become “fused” as a moving image.

A convex lens ( f = 20.0 cm) is placed 10.0 cm in front of a plane mirror. A matchstick is placed 25.0 cm in front of the lens as shown. (a) If you look through the lens toward the mirror, where will you see the image of the matchstick? (b) Is the image real or virtual? Explain. (c)

4. Measure to determine how much longer one object is than another, expressing the length difference in terms of a standard length unit.

The scale factor for my pre-image to my image was one-point five or one and one-half inch. By having a scale factor of one point five, the pre-image would be enlarged. If the scale factor is greater than 1, then the dilation would be an enlargement. If the scale factor would be less than 1, the dilation would be reduced smaller than the pre-image. If the scale factor would be 1 then there

A patient follows a nurse into a vacant room with a chair in the center. The patient takes a seat in the chair and starts to observe everything around her. There are machines connected to the chair and more machines surrounding it. On the wall parallel to her there are letters that increase in size row after row on a large white paper. The doctor comes into the room and examines the patient by using the machines and making her read the letters on the wall across. The doctor continues to exam the patient by using a flashlight to see how the eye will respond. All these tests will allow the doctor to see how poor the patient’s vision is. All of these details will happen

Light is generated by a flash and is projected through a set of filters and onto a concave mirror, this concave mirror reflects the light up into a series of lenses that focus the light. The uppermost lens shapes the light into a doughnut (Fundus Photography Overview, n.d.). The newly shaped light is then reflected onto another concave mirror and then exits the camera through the lens and then goes through the cornea. The resulting image exits through the cornea and then goes back to the single lens camera system (Fundus Photography Overview, n.d.).

Front Facing Eyes with high-quality optics which create an abnormally large binocular field of observation which is a sign for increased ethological importance for the use of stereo vision

Linear perspective is a mathematical system for creating the illusion of space and distance on a flat surface. Linear perspective was first used in Florence, Italy in the 1400s by Brunelleschi, an artist and architect. However, the first person to write the rules down was Leon Battista Alberti. Many artists have developed a concept of Alberti’s system for artists to follow. Leonardo da Vinci probably learned Alberti's system while serving as an apprentice to the artist Verrocchio in Florence. (Exploring Linear Perspective)

A. The stereoscope had lenses that combined the two different pictures as one providing the three-dimensional illusion without much strain to the eyes.

Focus is related to focal length and can be controlled with the focus knobs. The thickness of the cover glass on the specimen slide can also affect the ability to focus the image if it is too thick for the objective lens. The correct thickness is usually written on the side of the objective lens.

In the first part of the experiment, the fundamental quantities-length, mass and time were estimated simply by guessing. Even though it can be helpful sometimes to test a hypothesis, huge percentage errors in the measurements showed that human errors can be significant and therefore, we need more sophisticated techniques for more accurate measurement. For instance, using Vernier calipers is more precise than guessing the length or more accurate than the ruler.

Real field of view is the angle of the visible field, seen without moving the lens, measured from the central point of the objective lens. The larger the value is, the wider the view-field available. Apparent field of view is the angle of the magnified field when you look through lens. The larger the apparent field of view is, the wider the field of view you can see even at high magnifications. With the conventional method used previously, the apparent field of view