Health

How to get the most out of napping

While closing your eyes for a few minutes during your busy day may seem like a good idea, it's important to consider the effects napping may bring.

Health

Shift workers found to have a higher risk of severe COVID-19

Working night shifts is associated with several negative health outcomes, including an increased risk of infections. Now an international group of researchers has investigated how shift work and working face-to-face with ...

Psychology & Psychiatry

Protecting the mental state of health care workers

Nurses help millions of people address their physical and mental health. But who makes sure the nurses' health is taken care of? Dr. Farzan Sasangohar, associate professor in the Wm Michael Barnes '64 Department of Industrial ...

Health

What our twice-a-year shifts to the clock do to the body

In most places across the United States, Daylight Saving Time weekend is the time to shuffle around the house, fiddling with microwave and alarm clock displays. Daylight Saving Time ends at 2 a.m. Eastern Time on Sunday, ...

page 1 from 16

Night

Night or nighttime is the period of time when the sun is below the horizon. This occurs after dusk. The opposite of night is day (or "daytime" to distinguish it from "day" as used for a 24-hour period). The start and end times of night vary based on factors such as season, latitude, longitude and timezone.

At any given time, one side of the planet Earth is bathed in light from the Sun (the daytime) and the other side of the Earth is in the shadow caused by the Earth blocking the light of the sun. This shadow is what we call the darkness of night.

This text uses material from Wikipedia, licensed under CC BY-SA