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What is the goal of forensic photography?

Forensic photography is characterized by and requires scientific knowledge and techniques to discover and preserve information and details found during the investigation. The main objective is to record and graphically document evidence for legal purposes because it is an element of legal proof.

What is the purpose of the crime scene walk through?

The purpose of the walk through is to note the location of potential evidence and to mentally outline how the scene will be examined. The walk through begins as close to the point of entry as possible. The first place the investigators should examine is the ground on which they are about to tread.

The primary purpose of a crime scene search is to develop associative evidence that could link a suspect to the scene or a victim, and to answer questions crucial to the investigation, such as who perpetrated the crime, how the crime was committed, the circumstances surrounding the commission of the crime, and why the …

What happens if your heart stops for 20 minutes?

Doctors have long believed that if someone is without a heartbeat for longer than about 20 minutes, the brain usually suffers irreparable damage. But this can be avoided, Parnia says, with good quality CPR and careful post-resuscitation care.

Are you dead when your heart stops?

Sudden cardiac arrest occurs when the heart suddenly stops beating, which stops oxygen-rich blood from reaching the brain and other organs. A person can die from SCA in minutes if it is not treated right away.

What happens to your body when your heart stops?

Without the heart’s steady pumping action, blood stops flowing to the body’s organs. Unless emergency aid restores the heartbeat and gets the blood moving again within minutes, death will result. People sometimes confuse sudden cardiac arrest with a heart attack, but they are not the same thing.

Why do I feel like my heart stops for a second?

Rapid, fast heartbeat at rest could be caused by stress, caffeine, alcohol, tobacco, thyroid pills, cold medication, asthma drugs or diet pills. Sometimes low blood pressure , heart disease and some heart rhythm conditions can cause rapid heartbeat, too.