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Apr 29, 2010 · Today, we control the inter-conversion of energy to make light from electricity, heat and chemical reactions; in our daily lives, we use chemistry and light in communication, electronics, medicine and entertainment; and photochemists are working for a cleaner, brighter future by devising new methods to convert sunlight into useful energy and to ...
Dec 7, 2022 · This backgrounder is all about visible light and how we interact with it. Speed of Light. In a vacuum, visible light travels at the speed of approximately 299 792 458 metres per second (m/s). This is known as the speed of light. It is the fastest that anything in the universe is able to move!
Nov 14, 2024 · Why is light important for life on Earth? Light is a primary tool for perceiving the world and interacting with it for many organisms. Light from the Sun warms the Earth, drives global weather patterns, and initiates the life-sustaining process of photosynthesis; about 10 22 joules of solar radiant energy reach Earth each day.
Aug 4, 2015 · Light is the triggering force behind many chemical, biological and physiological changes in life forms on Earth. It provides much needed energy, and it also forms the foundation that aids in visibility.
Jan 30, 2023 · This page explains what happens when organic compounds absorb UV or visible light, and why the wavelength of light absorbed varies from compound to compound.
Dec 3, 2019 · Why do chemists need to know about light? It turns out that scientists can actually learn a lot about chemicals by observing how they interact with light. Different chemicals behave differently when struck with a beam of light. In fact, the same chemical will interact differently with differently colored beams of light.
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Oct 25, 2019 · It's easy to say chemistry is important because everything is made from chemicals but there are a lot of other reasons why chemistry is a big part of daily life and why everyone should understand basic chemistry.
