If your mercurial barometer reads 30.50 inches and the temperature is 56°F, what would be the corrected reading for specific coordinates?

To determine the corrected reading of a mercurial barometer, one must consider both the pressure reading and the temperature because temperature can affect the density of mercury in the barometer, leading to variations in pressure readings.

In this scenario, the barometer reads 30.50 inches at a temperature of 56°F. The correct adjustment takes into account the standard atmospheric conditions at sea level and makes necessary corrections for temperature and elevation if specific coordinates are provided.

Given the reading of 30.50 inches, if the air temperature is above the standard (which is typically assumed to be 32°F or 0°C), the barometer may read higher than the actual atmospheric pressure due to thermal expansion effects. Therefore, a slight correction would likely bring the reading down.

The corrected reading indicated here, 30.45 inches, would reflect such a minor adjustment for temperature effects at the specific set of coordinates provided. This number suggests a more accurate representation of the actual atmospheric pressure after correction, leading to a reading that would align more closely with meteorological standards for the stated conditions.

Thus, the corrected reading of 30.45 inches presents the most plausible estimate of the true atmospheric pressure under those conditions while considering the influence of temperature on the barometric