Visible light (commonly referred to simply as light) is electromagnetic radiation that is visible to the human eye‚ and is responsible for the sense of sight. Visible light is usually defined as having a wavelength in the range of 400 nanometres (nm)‚ or 400×10−9 m‚ to 700 nanometres – between the infrared‚ with longer wavelengths and the ultraviolet‚ with shorter wavelengths. These numbers do not represent the absolute limits of human vision‚ but the approximate range within which most people can
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where interconnecting wires are inconvenient‚ hazardous‚ or impossible. The most common form of wireless power transmission is carried out using direct induction followed by resonant magnetic induction. Other methods under consideration include electromagnetic radiation in the form of microwaves or lasers. Energy transfer and efficiency The general principle is that if a given oscillating amount of energy (for example alternating current from a wall outlet) is placed into a primary coil which is
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telescopes utilize one or more concave mirrors for the objective lens to condense the light and a small lens called an eyepiece. Pg3 Conclusion A telescope is an instrument that aids in the observation of remote objects by collecting electromagnetic radiation (such as visible light). The first known practical telescopes were invented in the Netherlands at the beginning of the 17th century‚ using glass lenses. They found use in terrestrial applications and astronomy. Within a few decades
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Electricity Electromagnetic Oscillations and Waves Diffraction and polarization of microwaves 4.5.06-00 What you can learn about … Diffraction Focal point Linearity Circularly and elliptically polarized waves Transverse waves Polarizer and Analyzer Constructive and destructive interference Principle: The equivalence between visible light and microwaves as special cases of the total spectrum of electromagnetic waves can be demonstrated using diffraction and polarization of
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Topic 4: Oscillations and Waves 10 hours 4.1 Kinematics of simple harmonic motion (SHM) 2 hours | |Assessment statement |Obj |Student Notes | |4.1.1 |Describe examples of oscillations. |2 |A mass hanged with a spring | | | | |A pendulum
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P1 AQA – Revision Notes 1. Heat Transfer • Thermal radiation = infra-red radiation (beyond red part of visible spectrum) • Surface of sun is 5500 degrees. • Greenhouse effect is the idea that the earth is a greenhouse‚ and the atmosphere is glass that stops substances exiting or entering. • DARK‚ MATT SURFACES emit more radiation than shiny‚ light ones‚ and absorb radiation better. • Conduction: free electrons are given energy where heated and diffuse – this energy is passed on as electrons
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long wavelengths and infrared light. Each color has a different wavelength‚ so it is refracted at a slightly different angle‚ resulting in dispersion. The colors visible spectrum results in the light response‚ the absorption‚ reflection‚ transmission and in the color addition/subtraction. Out of the visible light spectrum the most absorbed is the red-orange along with the yellow-green‚ and the blue-violet. As the light hits the water it gives it that darker or lighter blue. What the water contains
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Hertz‚ was testing Maxwell’s Theory of Electromagnetic Waves. Hertz discovered that ultraviolet light discharged certain electrically charged metallic plates‚ a phenomenon that could not be explained by Maxwell’s Wave Theory. In order to explain this phenomenon termed the photoelectric effect‚ because both light and electricity are involved‚ the Quantum Theory was developed. The Photoelectric Effect Maxwell’s work with the Theory of Electromagnetic Waves may seem to have solved the problem
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their life span. This complex method of energy production is also represented by the equation: 6CO2 + 6H2O C6H12O6 +6O2 (Campbell‚ 2008). The sun’s light waves‚ also known as radiation or electromagnetic energy‚ are measured and organized into the electromagnetic spectrum. Waves on the electromagnetic spectrum are measured in nanometers (nm); the shorter a wave is‚ the more energy it possesses‚ and the longer the wave the less energy it possesses (Wiles‚ 2013). The sun’s light waves are absorbed
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Activity: Identifying Forms of Energy Printer-friendly version Can you identify the different forms of energy in the picture below? Enter your answer in the table below and click the "Check Answers" button to check your work. Word Document: Text alternative of the Forms of Energy Activity The six fundamental forms of energy: Mechanical‚ Chemical‚ Thermal/Heat‚ Electrical‚ Nuclear and Radiation. Word Document: Text alternative of the Forms of Energy Activity https://www.e-education
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