In the UK, a significant proportion of children have not only experienced drinking alcohol by the time they are allowed to purchase an alcoholic beverage (i.e. before 18 years of age), but are likely to have been drunk at least once in the last 4 weeks.
btw. âº 1  written abbreviation for by the way: used, for example in emails, when you are writing something that relates to the subject you are discussing, but is not the main point of the discussion: âº 2  written abbreviation for by the way: used in an email, etc. to add an extra comment, piece of information, or question:
BTU Calculation. The BTU (British Thermal Unit) is universally accepted as a unit of heat transfer measurement. The BTU is defined as the quantity of heat required to raise the temperature of one pound of water 1Â°F. The equation for heat transfer to a liquid is as follows: Q=W(T2-T1)Cp.