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In Judaism, days last from dusk one day until dusk the next day (Leviticus ch.23). For purposes of Sabbath and other holy days, we observe the day from sunset until after twilight the following evening (about 25 hours), in order to avoid the doubt of when dusk begins and ends.
Days and nights are measured in twelve hours each. Thus, in the summer, 1/12 of a day will be more than in winter. This has practical implications for certain observances such as prayers.
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Which is the most efficient method of measuring salinity?
measuring in electrical conductivity
Method of measuring the boiling point elevation by beekmanns method?
Ernst Otto Beckmann is not known for having his own method for measuring the boiling point elevation. Beckmann used ebullioscopy, which is the method for measuring the boiling point elevation, and cryoscopy, which is the method for measuring freezing point depression, to determine molecular masses of objects. He invented a thermometer to differentiate between temperature differences and values. This thermometer is known as the Beckmann Thermometer.
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no
What does dry measuring method mean?
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