1. What is the Glaister Equation?

The Glaister equation is a formula used in forensic medicine to estimate the time since death based on the internal body temperature. It provides an approximate calculation of the postmortem interval.

2. How Does the Calculator Work?

The calculator uses the Glaister equation:

Where:

• \( Temp \) — Internal body temperature in °F
• 98.4 — Normal human body temperature in °F
• 1.5 — Cooling rate per hour (°F/hour)

Explanation: The equation assumes a linear cooling rate of 1.5°F per hour from the normal body temperature of 98.4°F.

3. Importance of Time Since Death Estimation

Details: Accurate estimation of time since death is crucial in forensic investigations, helping establish timelines and contributing to death investigations.

4. Using the Calculator

Tips: Enter the internal body temperature in °F. The value must be valid (temperature > 0 and ≤ 98.4°F).

5. Frequently Asked Questions (FAQ)

Q1: How accurate is the Glaister equation?
A: The Glaister equation provides a rough estimate and should be used as a guideline rather than an exact measurement, as many factors can affect body cooling rates.

Q2: What factors can affect the cooling rate?
A: Environmental temperature, body size, clothing, air movement, and body position can all influence the actual cooling rate.

Q3: When is this equation most accurate?
A: The equation is most accurate during the first 24 hours after death and in moderate environmental conditions.

Q4: Are there limitations to this equation?
A: Yes, it doesn't account for environmental factors, body composition, or circumstances that might accelerate or delay cooling.

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 indicators such as rigor mortis, livor mortis, and decomposition stages.