Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Room temperature is a common term to denote a certain temperature within enclosed space to which humans are accustomed. Room temperature is thus often indicated by general human comfort, with the common range of 20 °C (68 °F) to 25 °C (77 °F), though climate may acclimatize people to higher or lower temperatures. The term can also refer to a temperature of food to be consumed, which is placed in such a room for a given time. For scientific calculations, room temperature is usually taken to be 21 to 25 degrees Celsius, or 293 to 298 kelvins (K), or 65 to 72 degrees Fahrenheit. For numerical convenience, 300 K (27 °C, 80 °F) is often used. However, room temperature is not a precisely defined scientific term as opposed to Standard Temperature and Pressure, which has several, slightly different, definitions. According to the American Society for Testing and Materials (ASTM), "Room temperature shall be considered to be 50 °F to 100 °F unless otherwise specified."
