Why is the "golden hour" only 20 minutes long?

Question

Why is the "golden hour" only 20 minutes long?

Answer 1

wtf?

Answer 2

The Term Golden Hour is used in medicine and Photography

and both described a 60 minute period not a 20 minute period.  See explanations

below:

In photography, the golden hour (also known as magic hour) is the first and last hour of sunlight during the day when a specific photographic effect is achieved with the quality of the light during these hours.

Typically, lighting will be softer (more diffuse) and warm in hue, and shadows will be quite pronounced as a result of the sun being so close to the horizon. The sunlight is traveling obliquely (through more of the atmosphere) and striking objects at an angle, instead of straight down. The golden hour is a mild version of alpenglow, as described by Galen Rowell.

During the golden hour, highlights are less likely to be overexposed, because the direct light of the sun is less intense compared to the diffuse light of the sky. In landscape photography, the warm color of the low sun is considered desirable to enhance the colours of the scene.

In the middle of the day, the bright overhead sun can create too-bright highlights and long, dark shadows. The degree to which overexposure will occur will vary as different types of film and digital cameras have varying dynamic ranges. This harsh lighting problem is particularly important in portrait photography, where a fill flash is often necessary to balance lighting across the subject's face or body, filling in strong shadows that are considered undesirable. However, during the golden hour, such shadows are less pronounced. See link I provided for additional information

http://en.wikipedia.org/wiki/Golden_hour...

In Medicine:

The term "The Golden Hour" was originally coined by

Dr. R. Adams Cowley of the Maryland Institute for Emergency Medical Services , who is regarded as the pioneer of modern trauma care. Dr. Cowley advocated that most of the patients die of Shock , which comed from sluggish or nonexistent circulation and the resulting chemical changes in the body. He believed that most trauma patients could be saved if he could stop the bleeding and restore blood pressure within onehour. Patients who have experienced shock for more that one hour will likely die. Surgical intervention within that one hour , therefore , is critical for increasing the patient's chance of survival. This hour , called "The Golden Hour" , begines the moment of injury occurs. The Golden Hour Traumatic injury is one of the top three causes of death in the United States.  If you are under 45 years of age , it is the leading cause of death. This critical period is the "Golden Hour" and chances of survival increases dramatically if trained professionals stop the bleeding , treat the injury , and restore blood pressure.  See links I posted for your further information.

    

http://www.geocities.com/neomi59/GoldenH...

http://en.wikipedia.org/wiki/Golden_hour...

Alvin

Answer 3

which Golden hour are you referring to?  In Medicine the Golden Hour is just that 1 hour based on injury and while after the first 20 minutes its starts dropping it is basically 1 hour.