1. What is the Glaister Equation?

The Glaister equation estimates time since death based on the internal body temperature. It provides a method for forensic investigators to approximate the postmortem interval using the temperature difference from normal body temperature.

2. How Does the Calculator Work?

The calculator uses the Glaister equation:

Where:

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

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

3. Importance of Time Since Death Calculation

Details: Accurate estimation of time since death is crucial for forensic investigations, helping establish timelines and providing valuable evidence in criminal cases.

4. Using the Calculator

Tips: Enter internal body temperature in °F. The value must be valid (temperature > 0 and less than 98.4°F for meaningful results).

5. Frequently Asked Questions (FAQ)

Q1: Why use the Glaister equation?
A: The Glaister equation provides a simple and quick method for estimating time since death based on body temperature cooling.

Q2: What are the limitations of this equation?
A: The equation assumes a constant cooling rate and doesn't account for environmental factors, body size, clothing, or other variables that affect cooling.

Q3: When is this equation most accurate?
A: It's most accurate during the first few hours after death when the body follows a more predictable cooling pattern.

Q4: Are there other methods for estimating time since death?
A: Yes, other methods include rigor mortis, livor mortis, decomposition stages, and more complex temperature-based formulas.

Q5: Should this be used as the sole method for determining time of death?
A: No, this should be used as one of several indicators and should be combined with other forensic evidence for a more accurate estimation.