Under armour is sports performance apparel make athletes stronger‚ faster and better * Soft‚ lightweight‚ stretch-blended spun poly in a generous‚ fashionable cut. Cotton just can’t compare. * UA Tech® HeatGear® fabric wicks sweat away from your skin to help you stay cool‚ light‚ and comfortable * Armour®Stretch accelerates dry time and improves mobility with built in 4-way stretch. * Anti-Odor technology—anti-microbial treatment prevents the growth of odor-causing bacteria.
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leave the paper clip floating! How is this possible? With a little thing we scientists call SURFACE TENSION. Basically it means that there is a sort of skin on the surface of water where the water molecules hold on tight together. If the conditions are right‚ they can hold tight enough to support your paper clip. The paperclip is not truly floating‚ it is being held up by the surface tension. Many insects‚ such as water striders‚ use this "skin" to walk across the surface of a stream. The project
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understand better the role of surfactant in the alveolar system. Surfactant is a detergent-like substance produced by the Type II alveolar cells in the alveoli. Surfactant is produced to make it easier for people to breath by reducing the surface tension of the water molecules that primarily compose the walls of the alveoli; it helps them to not stick together. For this experiment‚ we will be using milk and food coloring to represent the water (milk) and gas (food coloring) in the respiratory system
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Steinbeck criticising society in "Breakfast" by John Steinbeck The story "Breakfast" by John Steinbeck is a description of a warm experience he had had. The story also has indirectly criticized society. The writer was fascinated by their simple living. Their high spirits‚ simple airs‚ their satisfaction and hospitality‚ all had an element of beauty in them which put an everlasting impression on the writer’s mind. The deep impression it made was also because the writer was
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The secret to a good bubble is something called surface tension‚ an invisible bond that holds water molecules together. Water is a polar molecule‚ so it has plus and minus ends just like magnets that attract each other. When the water molecules align with each other they stick together‚ creating surface tension. You might think that it is the surface tension of the water that holds the skin of a bubble together. Actually‚ the surface tension of water is too strong to make a bubble. You can try yourself
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years‚ important scientists and mathematicians like Leonardo da Vinci‚ Isaac Newton‚ Pierre Simon Laplace‚ Thomas Young‚ Siméon Denis Poisson‚ Josiah Willard Gibbs‚ Frederick M. Fowkes have done valuable pioneer work for the explanation of surface tension‚ capillarity‚ wetting and other interfacial problems. As a sector of physical chemistry‚ surface chemistry in connection with colloid chemistry established itself as an independent science about 70 years ago. Important milestones in modern theory
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improve the wetting ability of water‚ break up stains and keep the dirt in the water solution to prevent re-deposition of the dirt onto the surface from which it has just been removed. Surfactant can act as wetting agent as it lowers the surface tension of water. As a result‚ water can spread over on the surface of clothes uniformly and seep into dirty clothes fibers. As an emulsifying agent‚ surfactants can bring water and oil‚ which is originally immiscible‚ together. The hydrophobic tails of
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Sulfination Units Sulfination is the introduction of sulfonic acid into an organic compound. The usual sulfinating agent or sulficant is concentrated sulfuric acid but‚ sulfurtrioxide‚ chlorosulfonic acid‚ metallic sulfates‚ and sulfamic acid are also occasionally used. The name sulficants comes from these molecules moving to the surface of a liquid or to an interface between two liquids and changing the properties of the surface. However‚ the nature and properties of sulfuric acid‚ makes it
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Bubbles By Olivia Kenyon Table of contents Table of contents 2 Table of figures 3 Background knowledge 4 The film 4 The soap or detergent 4 The shape 5 The colours 7 Different fabrics as wands 9 My investigation 10 Part 1 10 Part 2 12 Other sources 13 Table of figures Figure 1. Soap molecules surrounding a layer of water making the film of a bubble 4 Figure 2. The general structure of a soap molecule 5 Figure 3. A table explaining that the sphere
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individual and every country in world are facing with racial tension. Racial tension can be described as‚ groups of people or more than one race who live around the same area and they are facing a serious conflict with each other. The effect of racial tension can be a everybody’s worst nightmare‚ but the most important is to study the causes of racial tension. The reason to study the causes of racial tension is to understand why and how racial tension happens‚ rather than pointing finger with eye closed
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