It is not its fault! But ours. We search for the emergency lamp only when power fails frequently. Otherwise it will be a dust depositor somewhere. To make the emergency lamp in good condition, proper care is needed. The emergency lamp battery is SMF (Sealed Maintenance Free) type and need not require water topping and can be placed in any position. It is rated 6 volts @ 4.5 Ah backup current.
The electrolyte of most SMF battery is a gel of Sulphuric acid mixed with Silica fume which makes the resulting mass gel like and immobile. This gel electrolyte reduces the electrolyte evaporation, spillage etc. One important feature of Gel battery is that the lead plates contain Calcium instead of Antimony to reduce water loss. Because of the presence of calcium, the gel battery charges very slowly compared to other batteries. Another important feature is its thermal sensitivity so the battery is vulnerable to thermal run away due to abusive charging. Over charging leads to its premature failure.
The Emergency lamp battery requires equal charge and discharge cycle. That is, it should be charged and discharged daily or once in two days. If it is always plugged in for charging, overcharging occurs leading to its permanent damage. If the battery is kept without charging for few days, self discharge takes place and the battery develops Memory Effect so that it will not charge fully. Deep discharge is another problem that can affect battery life. When the emergency lamp is kept switched on till it completely shut down, two adverse effects happen. The battery will not charge fully in recharging and the ends of tubes turn black due to filament damage. So it is better to switch off the lamp, when its light intensity drops.
Continue reading “Why Emergency Lamp is not doing well? Fact File 18”
Not their fault, but the result of evolutionary change to bring variation and viability in the population. Personality of human beings reflects in their behaviour in the society such as interaction with fellow beings, doing daily activities, doing competitive works etc. According to researchers, human beings belong to three classes based on their behaviour. Type A behaviour also called TAB personality is characterized by the competitive attitude and enthusiasm. So most of such personalities are workaholic. They can be referred to as Stress Junkies because they are always concerned about the job. Type B personalities on the other hand are generally patient, relaxed and easy going. The AB personalities show a mixed behaviour and they cannot be clearly categorized as either Type A or Type B personality.
Type A individual are ambitious, aggressive, controlling, highly competitive, impatient, and time conscious persons.Type B personality is almost perfect when compared to Type A personality. They are generally patient, relaxed, easy going, lack overriding, sense of urgency etc. Type B personality is apathetic and are disengaged persons as experts says. They often do jobs silently without showing much stress. Competitive mentality and sense of impatience are less in Type B persons.
AB personality is a hybrid behavior showing both Type A and Type B characteristics. They have mixed profiles and difficult to categorize as Type A or Type B persons. Health psychology studies say that the mental health and physical health are closely related. But still there are controversies among psychologists and researchers to classify personalities based on sample data and merely observing behavior. Some researchers have the opinions that, the personality can change due to learning, social behavior and also due to the changes in the living environment and life styles.
Continue reading “Why People behave differently? Fact File 17”