Light I | | INTRODUCTION | Light‚ form of energy visible to the human eye that is radiated by moving charged particles. Light from the Sun provides the energy needed for plant growth. Plants convert the energy in sunlight into storable chemical form through a process called photosynthesis. Petroleum‚ coal‚ and natural gas are the remains of plants that lived millions of years ago‚ and the energy these fuels release when they burn is the chemical energy converted from sunlight. When animals digest
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Light is everywhere in our world. We need it to see: it carries information from the world to our eyes and brains. Seeing colors and shapes is second nature to us‚ yet light is a perplexing phenomenon when we study it more closely. Here are some things to think about: Our brains and eyes act together to make extraordinary things happen in perception. Movies are sequences of still pictures. Magazine pictures are arrays of dots. Light acts like particles—little light bullets—that stream from the
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the objects picture a description of what happens when light ray is shone on it. The source of light is a light bulb from a ray box. If a beam of light of one colour is shone through a prism‚ the direction of the beam is changed by the prism. This is because the two faces of the prism through which the light passes are not parallel. If white light is used the prism splits up the light into a series of colours. This shows that white light is actually made up of many other colours - a fact first
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Physical Light and Spiritual Light In this discussion‚ there are two kinds of light that are going to be compared. The two kinds of lights that are going to be compared against each other in this discussion are going to be; physical light and spiritual light. As we all know‚ the sun‚ stars‚ oil lamps will all eventually burn out‚ whereas the light of God is forever‚ so showing that spiritual light‚ God’s light‚ is much better than physical light. In Genesis 1:3 God said let there be light and there
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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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Polarized light are those that are vibrating in one direction- in a single plane such as up and down. Those that are vibrating in more than one direction -- in more than one plane such as both up/down and left/right -- are called unpolarized light. Generally‚ unpolarized light can be considered to be vibrating in a vertical and a horizontal plane. To polarize light‚ one can transmit the light through a polariod filter which will only allow light of single polarity to pass. The resulting light will be
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is typically a short summary of the contents of the document.] Day light: The use of controlled natural lighting methods indoors through skylights‚ windows‚ and reflected light.. Day lighting in a building: is utilizing the available sunlight by manipulating window placement‚ window fixtures‚ and room dimensions to maximize natural light in a space. Benefits: It minimizes the need for lamps and overhead lights and the energy required to power artificial lighting. Daylighting improves
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Scattering of Light | The scattering of light is an important observation in our daily life. The way light scatters off molecules in the atmosphere explains why the sky is blue and why the sun looks red at sunrise and sunset. This is because of the scattering of light. | | | Tyndall Effect A beam of light or laser‚ invisible in clear air or pure water‚ will trace a visible path through colloidal particles. This is known as the Tyndall effect after its discoverer‚ the 19th-century British
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Essay 1: Light and Color The fascinating properties of light are not all detectable to humans‚ because our reference is mostly limited to what we can see. In order to determine the atomic/molecular composition of a fluid or gas‚ one must consult an emission and absorption spectrum. The properties of this spectrum include also waves‚ which can be any length‚ and define the spectrum of electromagnetic radiation. Ranging from gamma rays to radio waves‚ an electromagnetic spectrum includes each
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As the sun rises‚ birds begin to sing the joy of light and as the day ends‚ the birds fly back into the darkness of night. The darkness of our lives is often transformed by the delusion of light. In James Baldwin’s essay‚ "Sonny’s Blues‚"� the title itself sets up an irony that is explored throughout. The name "Sonny‚" when read‚ sounds like "Sunny‚" meaning brightness‚ light and hope. The word "Blues" presents the reader images of night‚ darkness and sadness. The darkness represents the reality
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