Energy Absorption
Energy Absorption - Related Videos
09:40
Lead Analysis of Soil Using Atomic Absorption Spectroscopy
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2023
Source: Laboratories of Margaret Workman and Kimberly Frye - Depaul University Lead occurs naturally in soil, in levels ranging from 10-50 ppm. However, with the widespread use of lead in paint and gasoline in addition to contamination by industry, urban soils often have concentrations of lead significantly greater than background levels – up to 10,000 ppm in some places. Ongoing problems arise from the fact that lead does not biodegrade, and instead remains in the soil. Serious health risks...
01:19
Drug Absorption: Factors Affecting GI Absorption
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2023
The process of oral drug absorption can be influenced by several factors. Weakly acidic drugs tend to be absorbed more readily from the stomach due to their nonionized state. However, absorption may be less efficient in the upper intestine, where drugs are often ionized. Interestingly, despite the stomach's apparent advantage for drug absorption, its mucous layer can hinder diffusion. Its surface area is also smaller than the intestine's, which can further slow down the absorption rate. In...
04:10
What is Energy?
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2020
The universe is composed of matter in different forms, and all forms of matter contain energy. The different forms of energy on Earth originate from the Sun — the ultimate energy source. Plants capture light energy from the Sun, and, via the process of photosynthesis, convert it into chemical energy. This stored energy from plants can be harnessed in many ways. For example, eating plant products as food provides energy for our body to function, and burning wood or coal (fossilized plants)...
08:52
Energy and Work
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2023
Source: Ketron Mitchell-Wynne, PhD, Asantha Cooray, PhD, Department of Physics & Astronomy, School of Physical Sciences, University of California, Irvine, CA This experiment demonstrates the work-energy principle. Energy is one of the most important concepts in science and is not simple to define. This experiment will deal with two different kinds of energy: gravitational potential energy and translational kinetic energy. Gravitational potential energy is defined as the energy an object...
06:39
Förster Resonance Energy Transfer (FRET)
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2023
Förster resonance energy transfer (FRET) is a phenomenon used to investigate close-range biochemical interactions. In FRET, a donor photoluminescent molecule can non-radiatively transfer energy to an acceptor molecule if their respective emission and absorbance spectra overlap. The amount of energy transferred—and consequently the overall emission of sample—depends on the proximity of an acceptor-donor pair of photoluminescent molecules. FRET analysis is combined with other biochemistry...
FAQs
Several pathways can remove energy from organized motion or transmitted input. Applied forces may produce plastic deformation, while friction converts mechanical energy into internal energy and sometimes sound. At smaller scales, molecular vibrations and electronic transitions can also take up energy. Which pathway dominates depends on the material, object, or system and the type of energy supplied.
Whether input is absorbed, transmitted onward, or retained as motion depends on the interaction between the external source and the responding system. Impacts, radiation, waves, and thermal transfer can produce different responses, including deformation, internal energy, sound, or electrical energy. This distinction helps identify how effectively a system redirects incoming energy.
The input category sets the physical response that must be examined. Impacts may involve force-driven deformation or friction, while radiation can involve electronic transitions. Waves and thermal transfer may also produce conversions into forms such as sound or internal energy. Studying these cases separately helps relate observed absorption to the source and its conversion pathway.
Researchers assess a material, object, or system while it receives energy from a specified external source. They then determine which outcomes accompany that input, such as plastic deformation, internal energy, sound, electrical energy, continued motion, or transmission onward. Applying this analysis to impacts, radiation, waves, or thermal transfer connects the measured response with the physical conditions.
Controlled energy absorption supports the design of protective equipment, vehicle crumple zones, building structures, acoustic materials, and energy-storage technologies. In each case, the relevant goal is to manage where supplied energy goes. Deformation or internal conversion can limit onward transmission, acoustic materials address sound-related behavior, and storage technologies use electrical-energy conversion. The exact design depends on the intended application.
Measurements provide evidence about how a material or object responds when energy arrives through different physical contexts. That information can show whether energy is converted into deformation, internal energy, sound, or electrical energy rather than remaining entirely as motion or being transmitted onward. Scientists and engineers can use these observations to judge suitability for protective, structural, acoustic, or storage applications.