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Hearing

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 Basic function of the ear The ear performs two distinct functions. It is used to detect sounds by receiving vibrations in the air, and  secondly, it is responsible for balancing and sensing acceleration. Of these, the listening aspect is more relevant to the maintenance engineer, and thus requires a basic understanding of how the ear works. As can be seen in the figure, the ear has three parts: outer ear, middle ear and inner ear.  They receive vibrations from the air and convert these signals into nerve impulses that the brain can recognize as sound. Outer ear: The outer part of the ear directs sound to the auditory canal and eardrum. The sound waves cause the eardrum to vibrate.  Middle ears: Beyond the eardrum is the middle ear, which transmits vibrations from the eardrum through three small bones known as ossicles , to the inner ear fluid.The acoustic or aural reflex are two muscles in the middle ear that help protect the ear from sounds above 80 dB and reduce...
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Migraine eye problem

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 Other visual problems include:  Migraine - severe headache that can cause visual disturbances.  Cataract - clouding of the lens, which is usually associated with aging; Astigmatism - a deformed or misshaped  cornea that causes objects to appear irregularly shaped;  Glaucoma - pressure buildup of fluid within the eye (eye pressure) which can cause damage to the optic nerve and even blindness;
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Murphy rules

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 Human beings have a tendency to be humble. The belief that "me" or "my company" will never have  an accident can be a major problem when individuals or organizations need to look at human factors  issues,  identify risks, and implement improvements. Attempts are made to explain, not just 'lip service' the human factors. "Murphy's Law" says:        "If something can go wrong, it will happen. This can help dispel the "this will never happen to me" belief that many people take lightly. And it is not true that accidents only happen to people who are 'irresponsible' or 'idiots'. 10 human factors  If you want to buy books    Best Sellers in Books
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The Basics of Human Factors Psychology

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  Definition of human Definition of humanity/define humanity  Humanity is all about feeling love and compassion for others, whether they are relatives or even people who are away from our lives. It is a feeling of love and compassion for everyone, irrespective of religion, caste and creed, irrespective of nationality, and even for our enemies. Matters such as religion, caste, creed and nationality often separate people and do not unite them. In my opinion, the way they have been practiced and lived, they have become the enemy of humanity.  10 Human factors   The engineers involved were considered by their Companies should have well-qualified, competent, and reliable employees. All the programs were characterized by the following: • There was a shortage of staff; • There was time pressure; • All errors happened overnight; • Involving shift changes or job handovers • All of them included supervisors who had been doing practical work for a long time; • There was an...
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