PPT-What is light? Light is electromagnetic radiation. What we usually describe as light is

The elementary particle that defines light is the photon There are 3 basic dimensions of light Intensity amplitude which is related to the perception of brightness Frequency wavelength perceived as colour. Answer. Radio waves. Microwaves. Infrared. Visible. Ultraviolet. X-rays. Gamma rays.. 2. ) Electromagnetic waves are all.... Longitudinal. Transverse.. Answer. b) Transverse. 3. ) The higher the frequency …. The stars and other objects in space are very far from Earth. Only a few solar system objects are close enough to be explored with probes. . Astronomers rely on electromagnetic waves to gain information about the universe.. (EMR). Remote Sensing Uses EMR!. Today’s learning objectives:. What is light and how do we describe it?. What . physical . units . do . we use to describe light?. Be able to convert between them and use scientific notation!. Almost all of our information on the heavens is derived from the light we see. We have returned samples from the Moon and a comet . Also obtained meteor samples. We have landed (with unmanned probes) on only a handful of planets and moons. Agenda. Turn in Displacement Lab work. Turn in Permission slips. Notes on . Studying Space & . Exploring . Space packet. Studying space from Earth. Tele. = distance. Scopos. = to watch. Light and radiation (energy in the form of waves that travel through empty space). Electromagnetic Radiation. Electromagnetic waves perpendicular waves combing the electric and magnetic fields. . Electromagnetic waves are produced when an electric charge vibrates or accelerates and can travel through empty space or through matter. . Ultraviolet (UV) light falls in the range of the EM spectrum between visible light and X-rays. UV . light, which comes from the sun, is invisible to the human eye. .. It . makes black-light posters glow, and is responsible for summer tans — and sunburns. Energy that travels as a wave through space. Wavelength –. λ – distance between corresponding points on adjacent waves. Frequency – f – waves per second. Spectrum. Breakdown of electromagnetic radiation by increasing wavelength. Chapter 9: Electrons in Atoms and the Periodic Table. Learning Goals. Compare the wave and particle natures of light.. Define a quantum of energy, and explain how it is related to an energy change of matter.. Agenda. Turn in Displacement Lab work. Turn in Permission slips. Notes on . Studying Space & . Exploring . Space packet. Studying space from Earth. Tele. = distance. Scopos. = to watch. Light and radiation (energy in the form of waves that travel through empty space). 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. Light. Properties and Interactions. What is Light?. Light. is a form of energy emitted by the Sun..  . What is Light?. Light. is a type of energy that travels as an electromagnetic wave.. Light, microwave, x-ray, TV, and cell phone transmission are all kinds of . electromagnetic waves. .. Electromagnetic waves are a group of energy waves that are mostly invisible and can travel through empty space.. Why is short wavelength electromagnetic radiation dangerous to us, whereas long wavelength electromagnetic radiation is considered ‘safe’? . Which wavelengths do we see as ‘Light’? Why these wavelengths? Why couldn’t the shorter and longer wavelength stuff work just .