# Entropy

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SAFETY HANDBOOK
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Safety Handbook
Introduction
Safety is the state of serenity being devoid of harm or any form of event that may be considered non-desirable. In any type of institution, be it, a business, school, industry, laboratory or even the common workplace, safety plays a major role in ensuring activities run smoothly and no-one gets hurt while doing their job. Safety encompasses protection from a wide host of potential hazards which could be physical, financial, emotional or biological. In the common workplace health is a major concern and infection control is the main aim of a safety handbook. Biosafety in the work setup starts by assuming every individual is a potential source of infection. Basic techniques such as scheduled cleaning of the workplace and regular hand washing by staff go a long way in ensuring infection control and biosafety of workers. All workplaces should ideally possess appropriate safety apparatus e.g. a first aid kit with an employee having necessary expertise in first aid. Provision of necessary safety equipments e.g. gowns, gloves and goggles is also essential in as far as biosafety in the workplace is concerned.

General Principles
Disease is caused by organisms termed pathogens. There are various pathogens that are located routinely in work setups. These include bacteria, fungi, viruses, prions or protozoa. When these manage to enter your body or attach onto your skin, disease arises. It usually takes a certain incubation time before symptoms appear depending on the nature of the particular pathogen. Therefore an infected individual may unknowingly be spreading disease to other workmates during the incubation period. Safety mechanisms provided in the safety handbook aim to prevent or reduce the chances of pathogens from coming into contact with an individual from the onset. As per the...

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#### Entropy

...surroundings. A spontaneous process is capable of proceeding in a given direction, as written or described, without needing to be driven by an outside source of energy. The term is used to refer to macro processes in which entropy increases; such as a smell diffusing in a room, ice melting in lukewarm water, salt dissolving in water, and iron rusting. The laws of thermodynamics govern the direction of a spontaneous process, ensuring that if a sufficiently large number of individual interactions (like atoms colliding) are involved then the direction will always be in the direction of increased entropy (since entropy increase is a statistical phenomenon). Entropy is a chemical concept that is very difficult to explain, because a one-sentence definition will not lead to a comprehensive statement. Thus, few people understand what entropy really is. You are not alone if you have some difficulty with this concept. The word entropy is used in many other places and for many other aspects. We confine our discussion to thermodynamics (science dealing with heat and changes) and to chemical and physical processes. We have defined energy as the driving force for changes; entropy is also a driving force for physical and chemical changes (reactions). Entropy, symbol S, is related to energy, but it a different aspect of energy. This concept was developed over a long period of time. Human experienced chemical and physical changes that cannot be explained by energy...

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