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Afternoon

physical science Maturity 7-9 Next article →

The afternoon is the time between noon and sunset.

Wien T%C3%BCrkenschanzpark (2376611600)
Wien T%C3%BCrkenschanzpark (2376611600)

It begins when the sun starts descending from its highest point. The sun moves from the center of the sky toward the west. In the late afternoon, the light becomes very bright and glaring. This happens because the sun sits at a low angle.

Rooftop Bar, Metropolitan Museum Of Art (5894065780)
Rooftop Bar, Metropolitan Museum Of Art (5894065780)

For many people, this is the second half of the work day. In Denmark, people define the afternoon as the time from 1:00 pm to 5:00 pm.

Many living things change how they act during these hours. Plants have their highest levels of photosynthesis in the early afternoon. Photosynthesis is how plants use sunlight to make food. Large maize crops can even change the amount of carbon dioxide in the air. This happens because they use so much carbon dioxide during the day. These levels drop sharply once the afternoon turns into evening.

Wien T%C3%BCrkenschanzpark (2376611600)
Wien T%C3%BCrkenschanzpark (2376611600)

In animals, a hormone called cortisol is often very stable. Cortisol helps with things like blood sugar and stress. Scientists find this time of day very useful for studying these levels.

Humans also experience changes in their bodies during the afternoon. Most people find their body temperature is highest in the late afternoon. Because of the sun's bright glare, farmers must plan carefully. They often build animal houses running east to west. This allows for thicker walls to block the intense afternoon sun. If animals get too hot, they can become restless or unproductive. This shows how the sun's position affects life on Earth.

Sometimes, people feel less alert as the afternoon goes on. A study in Sweden looked at car accidents from 1987 to 1991. They found that 5:00 pm had the most accidents. There were about 1,600 accidents at that time. This was much higher than the 1,000 accidents seen at 4:00 pm or 6:00 pm.

Car accident poland 2008
Car accident poland 2008

In Finland, farm accidents are most common on Monday afternoons in September. These patterns might happen because of the afternoon rush hour.

Productivity also tends to dip during these hours. One study in the 1950s looked at two factory workers. It found their work was 13 percent lower in the afternoon. The least productive time was their very last hour of work. Not everyone follows the same daily rhythm, though. Some people are "morning types" and others are "evening types." However, most people show high alertness between 2:00 pm and 8:00 pm.

Rooftop Bar, Metropolitan Museum Of Art (5894065780)
Rooftop Bar, Metropolitan Museum Of Art (5894065780)
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File:Rooftop Bar, Metropolitan Museum Of Art (5894065780).jpg
Rooftop Bar, Metropolitan Museum Of Art...
File:Car accident poland 2008.jpg
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