Nature of Light Presentation Class...
Transcript of Nature of Light Presentation Class...
![Page 1: Nature of Light Presentation Class 10.1mshenriques.weebly.com/.../nature_of_light_presentation_class_10.1.… · Nature of Light Presentation Class 10.1.pptx Author: Melanie Henriques](https://reader034.fdocuments.in/reader034/viewer/2022051913/6004a5227dbf263a8454a6e7/html5/thumbnails/1.jpg)
The Nature of Light
![Page 2: Nature of Light Presentation Class 10.1mshenriques.weebly.com/.../nature_of_light_presentation_class_10.1.… · Nature of Light Presentation Class 10.1.pptx Author: Melanie Henriques](https://reader034.fdocuments.in/reader034/viewer/2022051913/6004a5227dbf263a8454a6e7/html5/thumbnails/2.jpg)
Light Energy; • Comes from the sun • Allows photosynthesis
• Travels at high speed
• Travels in a straight line
• Travels as a wave
![Page 3: Nature of Light Presentation Class 10.1mshenriques.weebly.com/.../nature_of_light_presentation_class_10.1.… · Nature of Light Presentation Class 10.1.pptx Author: Melanie Henriques](https://reader034.fdocuments.in/reader034/viewer/2022051913/6004a5227dbf263a8454a6e7/html5/thumbnails/3.jpg)
Wave Proper>es
![Page 4: Nature of Light Presentation Class 10.1mshenriques.weebly.com/.../nature_of_light_presentation_class_10.1.… · Nature of Light Presentation Class 10.1.pptx Author: Melanie Henriques](https://reader034.fdocuments.in/reader034/viewer/2022051913/6004a5227dbf263a8454a6e7/html5/thumbnails/4.jpg)
Types of Electromagne>c Waves
![Page 5: Nature of Light Presentation Class 10.1mshenriques.weebly.com/.../nature_of_light_presentation_class_10.1.… · Nature of Light Presentation Class 10.1.pptx Author: Melanie Henriques](https://reader034.fdocuments.in/reader034/viewer/2022051913/6004a5227dbf263a8454a6e7/html5/thumbnails/5.jpg)
Electromagne>c Spectrum Cell phone
(radio) Microwave Remote
(Infrared rays) Sunburn (Ultraviolet
rays)
X Rays Cancer therapy (gamma rays)
![Page 6: Nature of Light Presentation Class 10.1mshenriques.weebly.com/.../nature_of_light_presentation_class_10.1.… · Nature of Light Presentation Class 10.1.pptx Author: Melanie Henriques](https://reader034.fdocuments.in/reader034/viewer/2022051913/6004a5227dbf263a8454a6e7/html5/thumbnails/6.jpg)
Electromagne>c Spectrum Cell phone
(radio) Microwave Remote
(Infrared rays) Sunburn (Ultraviolet
rays)
X Rays Cancer therapy (gamma rays)
![Page 7: Nature of Light Presentation Class 10.1mshenriques.weebly.com/.../nature_of_light_presentation_class_10.1.… · Nature of Light Presentation Class 10.1.pptx Author: Melanie Henriques](https://reader034.fdocuments.in/reader034/viewer/2022051913/6004a5227dbf263a8454a6e7/html5/thumbnails/7.jpg)
Electromagne>c Spectrum
![Page 8: Nature of Light Presentation Class 10.1mshenriques.weebly.com/.../nature_of_light_presentation_class_10.1.… · Nature of Light Presentation Class 10.1.pptx Author: Melanie Henriques](https://reader034.fdocuments.in/reader034/viewer/2022051913/6004a5227dbf263a8454a6e7/html5/thumbnails/8.jpg)
Electromagne>c Spectrum
![Page 9: Nature of Light Presentation Class 10.1mshenriques.weebly.com/.../nature_of_light_presentation_class_10.1.… · Nature of Light Presentation Class 10.1.pptx Author: Melanie Henriques](https://reader034.fdocuments.in/reader034/viewer/2022051913/6004a5227dbf263a8454a6e7/html5/thumbnails/9.jpg)
Electromagne>c Spectrum
![Page 10: Nature of Light Presentation Class 10.1mshenriques.weebly.com/.../nature_of_light_presentation_class_10.1.… · Nature of Light Presentation Class 10.1.pptx Author: Melanie Henriques](https://reader034.fdocuments.in/reader034/viewer/2022051913/6004a5227dbf263a8454a6e7/html5/thumbnails/10.jpg)
Electromagne>c Spectrum Sunburn (Ultraviolet
rays)
![Page 11: Nature of Light Presentation Class 10.1mshenriques.weebly.com/.../nature_of_light_presentation_class_10.1.… · Nature of Light Presentation Class 10.1.pptx Author: Melanie Henriques](https://reader034.fdocuments.in/reader034/viewer/2022051913/6004a5227dbf263a8454a6e7/html5/thumbnails/11.jpg)
Electromagne>c Spectrum Remote
(Infrared rays) Sunburn (Ultraviolet
rays)
![Page 12: Nature of Light Presentation Class 10.1mshenriques.weebly.com/.../nature_of_light_presentation_class_10.1.… · Nature of Light Presentation Class 10.1.pptx Author: Melanie Henriques](https://reader034.fdocuments.in/reader034/viewer/2022051913/6004a5227dbf263a8454a6e7/html5/thumbnails/12.jpg)
Electromagne>c Spectrum Remote
(Infrared rays) Sunburn (Ultraviolet
rays)
X Rays
![Page 13: Nature of Light Presentation Class 10.1mshenriques.weebly.com/.../nature_of_light_presentation_class_10.1.… · Nature of Light Presentation Class 10.1.pptx Author: Melanie Henriques](https://reader034.fdocuments.in/reader034/viewer/2022051913/6004a5227dbf263a8454a6e7/html5/thumbnails/13.jpg)
Electromagne>c Spectrum Cell phone
(radio) Remote
(Infrared rays) Sunburn (Ultraviolet
rays)
X Rays
![Page 14: Nature of Light Presentation Class 10.1mshenriques.weebly.com/.../nature_of_light_presentation_class_10.1.… · Nature of Light Presentation Class 10.1.pptx Author: Melanie Henriques](https://reader034.fdocuments.in/reader034/viewer/2022051913/6004a5227dbf263a8454a6e7/html5/thumbnails/14.jpg)
Electromagne>c Spectrum Cell phone
(radio) Remote
(Infrared rays) Sunburn (Ultraviolet
rays)
X Rays Cancer therapy (gamma rays)
![Page 15: Nature of Light Presentation Class 10.1mshenriques.weebly.com/.../nature_of_light_presentation_class_10.1.… · Nature of Light Presentation Class 10.1.pptx Author: Melanie Henriques](https://reader034.fdocuments.in/reader034/viewer/2022051913/6004a5227dbf263a8454a6e7/html5/thumbnails/15.jpg)
Electromagne>c Spectrum Cell phone
(radio) Microwave Remote
(Infrared rays) Sunburn (Ultraviolet
rays)
X Rays Cancer therapy (gamma rays)
![Page 16: Nature of Light Presentation Class 10.1mshenriques.weebly.com/.../nature_of_light_presentation_class_10.1.… · Nature of Light Presentation Class 10.1.pptx Author: Melanie Henriques](https://reader034.fdocuments.in/reader034/viewer/2022051913/6004a5227dbf263a8454a6e7/html5/thumbnails/16.jpg)
Electromagne>c Spectrum Cell phone
(radio) Microwave Remote
(Infrared rays) Sunburn (Ultraviolet
rays)
X Rays Cancer therapy (gamma rays)
![Page 17: Nature of Light Presentation Class 10.1mshenriques.weebly.com/.../nature_of_light_presentation_class_10.1.… · Nature of Light Presentation Class 10.1.pptx Author: Melanie Henriques](https://reader034.fdocuments.in/reader034/viewer/2022051913/6004a5227dbf263a8454a6e7/html5/thumbnails/17.jpg)
What is White Light?
• white light is a mixture of all the colours (wavelengths) of visible light
• think of white light as the en>re spectrum hiLng an object
![Page 18: Nature of Light Presentation Class 10.1mshenriques.weebly.com/.../nature_of_light_presentation_class_10.1.… · Nature of Light Presentation Class 10.1.pptx Author: Melanie Henriques](https://reader034.fdocuments.in/reader034/viewer/2022051913/6004a5227dbf263a8454a6e7/html5/thumbnails/18.jpg)
Richard Of York Gave Ba2le In Vain
R O Y G B I V
(Roy G. Biv)
What is White Light?
![Page 19: Nature of Light Presentation Class 10.1mshenriques.weebly.com/.../nature_of_light_presentation_class_10.1.… · Nature of Light Presentation Class 10.1.pptx Author: Melanie Henriques](https://reader034.fdocuments.in/reader034/viewer/2022051913/6004a5227dbf263a8454a6e7/html5/thumbnails/19.jpg)
Richard Of York Gave Ba2le In Vain R O Y G. B I V
Larger Wavelength
Smaller Wavelength
![Page 20: Nature of Light Presentation Class 10.1mshenriques.weebly.com/.../nature_of_light_presentation_class_10.1.… · Nature of Light Presentation Class 10.1.pptx Author: Melanie Henriques](https://reader034.fdocuments.in/reader034/viewer/2022051913/6004a5227dbf263a8454a6e7/html5/thumbnails/20.jpg)
Colour of Opaque Objects
• What does it mean for an object to be a certain colour? -‐it means it only reflects
THAT colour of light -‐grass is green
because it reflects green light – the reflected green light travels to our eyes
![Page 21: Nature of Light Presentation Class 10.1mshenriques.weebly.com/.../nature_of_light_presentation_class_10.1.… · Nature of Light Presentation Class 10.1.pptx Author: Melanie Henriques](https://reader034.fdocuments.in/reader034/viewer/2022051913/6004a5227dbf263a8454a6e7/html5/thumbnails/21.jpg)
What Colour is a Tomato? • under white light under green light
• a red object can only reflect red light • if there is no red light to reflect, the object absorbs all the other colours and appears black