We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byCaden McNeil
Modified over 2 years ago
Energy in Our Life
Miroslav Hruška Czech Republic
Electromagnetic radiation …is a form of ENERGY
Forms of E-M radiation radio waves microwaves infrared radiation visible radiation (light) ultraviolet radiation X-rays gamma rays
Electromagnetic waves wavelength - in metres frequency - in hertz
Wave formula wave speed = = frequency x wavelength c = 300,000,000 m/s the higher frequency the lower wavelength
Differences in sources in penetrability in impact on people in use
Microwaves - oven
Microwaves - communication
Microwaves - radar
Thermal radiation infrared radiation visible radiation = light ultraviolet radiation
Thermal radiation - sources Sun and other stars light bulb hot oven infrared heater melting iron hot lava
Thermal radiation formula The hotter a body is, the shorter wavelengths it emits, and the more energy it looses.
Infrared radiation - use thermography night vision infrared heating remote control
Infrared radiation - thermography
Infrared radiation – night vision
Light from 390 nm to 790 nm
Light spectrum prism spectrum
Light - spectroscopy spectral analysis => chemical composition
Laser Light Amplification by Stimulated Emission of Radiation
Laser – optical recording CDred laser 780 nm DVDred-orange 650 nm Blu-ray“blue” (violet) 405 nm
UV radiation UVA 315-390 nm UVB 280-315 nm UVC 100-280 nm
Gamma rays – in medicine
Electromagnetic radiation © Miroslav Hruška, 2012
Electromagnetic Spectrum. -is the range of all possible frequencies of electromagnetic radiation. The "electromagnetic spectrum" of an object is the characteristic.
Electromagnetic Spectrum The EM Spectrum What do a radio, heat lamp, the Sun, and an X-ray Machine have in Common? – All four transmit energy.
Energy Kinetic Energy Potential Energy.
The Electromagnetic Spectrum Contents: The Spectrum Basic Concepts Whiteboards.
Electromagnetic Spectrum. Different Types of Light Light is a form of energy It travels in waves Also called Electromagnetic Radiation Some Electromagnetic.
1 Electromagnetic Spectrum “EMS”. Electromagnetic Spectrum Types of radiation that travel in waves 7 types of EM radiation (from lowest to highest frequencies)
Electromagnetic Spectrum. The colors we see only represent a small portion of the electromagnetic spectrum The colors we see only represent a small portion.
Section 2: Waves of the Electromagnetic Spectrum Objectives: list and compare different types of electromagnetic waves describe how the electromagnetic.
Ch. 17 ELECTROMAGNETIC SPECTRUM Electromagnetic waves Are made of changing electric and magnetic fields EM waves DO NOT need a medium to travel
The Electromagnetic Spectrum1 Wavelength/frequency/energy.
Electromagnetic spectrum. Visible light λ ≈ 700 nmλ ≈ 420 nm.
Flame Test and the EMS. Absorption and Emission of Light in a Flame When a substance is heated in a flame, the substances electrons absorb energy from.
The Electromagnetic Spectrum Scripps Classroom Connection
Electromagnetic Waves Chapter 17 Section 1-2 Pages
Electromagnetic Spectrum yuan-sen-ting yuan-sen-ting.
4-1 Radiant Energy. Waves Light travels in Waves similar to ocean waves Light waves are electromagnetic and consist of an electric and magnetic fields.
Electromagnetic Waves. Electromagnetic Spectrum.
© 2017 SlidePlayer.com Inc. All rights reserved.