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Glaister Equation:
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The Glaister equation estimates time since death using the internal body temperature. It is based on the principle that the human body cools at a relatively constant rate after death, approximately 1.5°F per hour.
The calculator uses the Glaister equation:
Where:
Explanation: The equation calculates the estimated time since death by measuring how much the body temperature has dropped from normal body temperature, divided by the standard cooling rate.
Details: Accurate estimation of time since death is crucial for forensic investigations, helping establish timelines in criminal cases and providing important information for death investigations.
Tips: Enter the internal body temperature in °F. The value must be valid (temperature > 0 and less than 98.4°F for meaningful results).
Q1: How accurate is the Glaister equation?
A: The Glaister equation provides a rough estimate and should be used as a guideline. Actual cooling rates can vary based on environmental conditions, body size, and other factors.
Q2: What factors affect body cooling rate?
A: Environmental temperature, humidity, air movement, body size, clothing, and body position can all affect the cooling rate.
Q3: When is this equation most accurate?
A: The equation is most accurate during the first 12-24 hours after death and in stable environmental conditions.
Q4: Are there limitations to this equation?
A: Yes, it doesn't account for environmental factors, body composition, or individual variations in normal body temperature.
Q5: Should this be used as the sole method for determining time of death?
A: No, this should be used in conjunction with other forensic methods such as rigor mortis, livor mortis, and decomposition signs for a more accurate estimation.