1.Lenses are used to make objects appear larger or smaller. List at least five different uses for a...
-
Upload
ferdinand-alexander -
Category
Documents
-
view
212 -
download
0
Transcript of 1.Lenses are used to make objects appear larger or smaller. List at least five different uses for a...
![Page 1: 1.Lenses are used to make objects appear larger or smaller. List at least five different uses for a lens. 2.Large, curved mirrors are used to prevent shoplifting.](https://reader036.fdocuments.in/reader036/viewer/2022082819/56649f2b5503460f94c46c69/html5/thumbnails/1.jpg)
1. Lenses are used to make objects appear larger or smaller. List at least five different uses for a lens.
2. Large, curved mirrors are used to prevent shoplifting in retail stores. Explain why these mirrors are curved instead of flat.
3. A car mirror on the passenger-side door often has a sign that reads, “Objects in mirror are closer than they appear.” How does the shape of the mirror necessitate this warning?
Notebook # 9Bellringer – Section 4
![Page 2: 1.Lenses are used to make objects appear larger or smaller. List at least five different uses for a lens. 2.Large, curved mirrors are used to prevent shoplifting.](https://reader036.fdocuments.in/reader036/viewer/2022082819/56649f2b5503460f94c46c69/html5/thumbnails/2.jpg)
I. Refraction of lightA. Refraction – bending of light.
1.When light travels from one medium to another, it:
a. changes speed.
![Page 3: 1.Lenses are used to make objects appear larger or smaller. List at least five different uses for a lens. 2.Large, curved mirrors are used to prevent shoplifting.](https://reader036.fdocuments.in/reader036/viewer/2022082819/56649f2b5503460f94c46c69/html5/thumbnails/3.jpg)
Water
Air
B. Going from a higher speed to a lower speed:
1. Light bends toward the normal.
NORMAL
![Page 4: 1.Lenses are used to make objects appear larger or smaller. List at least five different uses for a lens. 2.Large, curved mirrors are used to prevent shoplifting.](https://reader036.fdocuments.in/reader036/viewer/2022082819/56649f2b5503460f94c46c69/html5/thumbnails/4.jpg)
Water
Air
C. Going from a lower speed to a higher speed:
1. Light bends away from the normal.
NORMAL
![Page 5: 1.Lenses are used to make objects appear larger or smaller. List at least five different uses for a lens. 2.Large, curved mirrors are used to prevent shoplifting.](https://reader036.fdocuments.in/reader036/viewer/2022082819/56649f2b5503460f94c46c69/html5/thumbnails/5.jpg)
D. Refraction of light creates a virtual image.1. Our brains “think” light travels in a straight
line when it is actually bending.
![Page 6: 1.Lenses are used to make objects appear larger or smaller. List at least five different uses for a lens. 2.Large, curved mirrors are used to prevent shoplifting.](https://reader036.fdocuments.in/reader036/viewer/2022082819/56649f2b5503460f94c46c69/html5/thumbnails/6.jpg)
A. Total internal reflection –
1. Light is reflected as if were bouncing off of a mirror.
a. Optical fibers take advantage of total internal reflection to transmit data.
II. Total Internal Reflectionlight traveling from
one medium to another being completely reflected at the boundary.
![Page 7: 1.Lenses are used to make objects appear larger or smaller. List at least five different uses for a lens. 2.Large, curved mirrors are used to prevent shoplifting.](https://reader036.fdocuments.in/reader036/viewer/2022082819/56649f2b5503460f94c46c69/html5/thumbnails/7.jpg)
b. Data is converted into digital signals consisting of pulses of light by lasers.
c. Multiple signals can be sent through one line using different λ.
![Page 8: 1.Lenses are used to make objects appear larger or smaller. List at least five different uses for a lens. 2.Large, curved mirrors are used to prevent shoplifting.](https://reader036.fdocuments.in/reader036/viewer/2022082819/56649f2b5503460f94c46c69/html5/thumbnails/8.jpg)
III. LensesA. Lens – Transparent object that refracts light
waves such that they:
1. converge – come together.
2. diverge – move apart.
B. Converging Lens – bends light inward.
Thickerin the
middle
![Page 9: 1.Lenses are used to make objects appear larger or smaller. List at least five different uses for a lens. 2.Large, curved mirrors are used to prevent shoplifting.](https://reader036.fdocuments.in/reader036/viewer/2022082819/56649f2b5503460f94c46c69/html5/thumbnails/9.jpg)
C. Diverging Lens – bends light outward.
Thinnerin the
middle
![Page 10: 1.Lenses are used to make objects appear larger or smaller. List at least five different uses for a lens. 2.Large, curved mirrors are used to prevent shoplifting.](https://reader036.fdocuments.in/reader036/viewer/2022082819/56649f2b5503460f94c46c69/html5/thumbnails/10.jpg)
Notebook #10
Workbook:
Pages 63 & 64