PPT-18.3 Behavior of Light Light and Materials – How light behaves when it hits a surface

Materials can be Transparent A material that transmits allows through light unaffected Translucent A material that transmits light but scatters it into different directions Opaque. If a visual system only made a single measurement of luminance acting as a pho tometer then there would be no way to distinguish a white surface in dim light from a black surface in bright light et humans can usually do so and this skill is known as When light strikes an object it is:. Properties of Light. When light strikes an object it is:. Reflected. Properties of Light. When light strikes an object it is:. Reflected. Transmitted . Properties of Light. It. is . a simple way to reveal microstructure. . of metallic alloys. Purpose of etching is to . reveale. the microstructure of metals and alloys by creating an image contrast.. Electrolytic etching ensues right after an electropolishing operation is completed, . 5.6C . Demonstrate . that . light. travels in a straight line until it strikes an object or travels through one medium to another and demonstrate that light can be reflected such as the use of mirrors or other shiny surfaces and refracted such as the appearance of an object when observed through water.. By Kristine. Optical devices. An optical device is any technology that uses light. An optical device can be as simple as a mirror, or as complex as the Hubble Space Telescope.. Microscopes. Hans and Zacharias Jansen of the Netherlands first built a microscope in about 1595.. Source: A. Efros. Image formation. How bright is the image of a scene point?. Radiometry: Measuring light. The basic setup: a light source is sending radiation to a surface patch. What matters:. How big the source and the patch “look” to each other. what happens?. When light hits an object, . what happens?. I can tell if an object is opaque, translucent, or transparent.. When light hits an object, what happens?. When light hits an object, what happens?. Science 8. Redding - 2014. Topic 1 – What is light???. 'Light is a form of energy' . When . light reaches a surface, it can be absorbed and transformed into other types of energy. .. Electrical – calculators. Lesson 5. What kinds of shadows were produced by the puppets in the video?. Blocking the Light. Blocking the Light. Transparent – Allows light and an image to travel through. (Example: Glass). Translucent – Allows light to travel through, but not an image. (Example: Tissue Paper). Properties of Light. When light strikes an object it is:. Reflected. Properties of Light. When light strikes an object it is:. Reflected. Transmitted . Properties of Light. When light strikes an object it is:. Demonstrate . that . light. travels in a straight line until it strikes an object or travels through one medium to another and demonstrate that light can be reflected such as the use of mirrors or other shiny surfaces and refracted such as the appearance of an object when observed through water.. Light. What is light?. . It is the electromagnetic . radiation that can be . perceived . by the human eye. It is made up . of.  . electromagnetic waves.  with wavelengths between . 4 . × 10. -7. Light travels in a STRAIGHT LINE . ANOTHER WAY TO THINK OF LIGHT. Light leaving the candle travels in all directions, but we only SEE the light that travels in to our Eye-Brain. ANOTHER WAY TO THINK OF . - understand that light from can be reflected by a mirror . Starter Task. Think back to last lesson. . Can you remember any examples of . light sources?. Watch the clip below and write down as many examples as you can!.