Overview. Beryllium is the lightest member of the alkaline earth metals family. These metals make up Group 2 (IIA) of the periodic table. They include beryllium, magnesium, calcium, strontium, barium, and radium.Elements in the same column of the periodic table have similar chemical properties.eryllium is the lightest member of the alkaline earth metals family. These metals make up Group 2 (IIA) of the periodic table.
Definition 1: EER, energy efficiency ratio: Is the measure of air conditioner efficiency at maximum air conditioning load. It is measured by ratio of Btu/hour of cooling or heating load, to watts of electrical power input. The unit is in Btu hr-1 W-1. Definition 2: SEER, seasonal energy efficiency ratio: The measurement units of SEER is exactly the same as EER, but the difference lies in the data used for the measurement. Values for SEER, is determined through averaging readings of different air conditions, to represent air conditioner efficiency throughout the season.
The Average True Range (ATR) is an indicator that was developed by J. Welles Wilder, Jr. who introduced it along with a few other indicators (Parabolic SAR, RSI and the Directional Movement Concept) in his book, âNew Concepts in Technical Trading Systemsâ in 1978.he Average true range is not only used as a basis for the stop loss level, it also plays a significant role in setting the take profit level. Our discussion on the use of dollars to express the value of the stop loss level goes the same way if we express it as number of periods or pips.