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Ernest Rutherford Gold Foil Experiment Conclusion Ernest Rutherford Gold Foil Experiment In 1909, Ernest Rutherford conducted an experiment that would lead to the discovery of the existence of subatomic particles, which later became known as “Protons.” He did this by firing alpha particles at thin sheets of gold foil. Rutherford found that about half the…
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JJ Thomson Plum Pudding Model Experiment JJ Thomson Plum Pudding Model The plum pudding model of the atom states that the electrons in an atom are arranged around the nucleus in a series of shells. The first shell is closest to the nucleus, with up to two electrons per orbital. Each succeeding shell has more…
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Niels Bohr Atomic Model Theory Experiment Niels Bohr Education & Life Niels Bohr is a well-known Danish physicist that spent the majority of his life studying the atomic model. The atomic model is a theory that holds that the atoms in an element are different from one another and contain protons, electrons, and neutrons. Bohr’s…
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Ernest Rutherford Atomic Theory Model & Experiment Ernest Rutherford Contribution Ernest Rutherford was a New Zealand-born British chemist and physicist known for his pioneering work in the study of radioactivity. In 1903, he became the first person to demonstrate that radioactive materials emit energy in a continuous stream of particles and are not merely energy…
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Poka-Yoke Definition & Poka Yoke Example in Manufacturing &Service Industries Poka-Yoke Definition Poka-Yoke is a Japanese term that means “mistake-proofing.” It refers to any device or process that prevents wrong actions, errors of omission, and defects from occurring in the first place. Poka-yokes are often designed as “failsafe” devices where an action cannot occur unless…
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Aggregate | Types of Aggregates Aggregate The other important component of concrete is aggregate; the quality of aggregate defines the quality of concrete. Almost three-quarters of the total volume of concrete is taken by aggregate. Aggregate was considered as inert and cheap material, but in fact it is not totally inert. The main functions of…
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Admixtures | Types of concrete Admixtures Admixtures are also known as Additives. These are the fourth ingredient of concrete, other than cement, aggregate and water. They are for many reasons in concrete like to increase the workability of concrete, to reduce the cost of concrete structures, to maintain the quality of concrete at different stages…
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Properties of Hardened Concrete Some of the important properties are shown below. Strength The strength of concrete is defined as the ability of concrete to resist stresses and to take loads without breaking or failing. There are many types of strength of concrete, like compressive strength, tensile strength, shear strength and flexural strength. The failure…
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Transportation and Handling of Concrete Once the concrete is ready on the site or it reaches to the site by trucks and loaders. The labor transport it to the working site where concreting is carried out. The transport the concrete using one of the following ways: Mortar pan Wheel barrow Chutes Dumpers Bucket and ropeway…
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Stages of Concrete Making Concrete production involves different process and stages; the different stages are given in the list below. Which would be discussed in detail in the latter part of the paper. Batching Mixing Transportation Placing Compacting Finishing Curing With different stages being introduced, let’s explain each stage in detail. Batching It is the…