Health

Study reveals the relaxing music to help you sleep

Perhaps there's nothing quite as frustrating as trying and failing to fall asleep. But if you're one of the many people who struggle to switch off come bedtime, the findings of a new study might give you some hope—and the ...

Psychology & Psychiatry

Insomnia treatment offers relief

Insomnia causing sleepless nights, daytime fatigue and poor health outcomes is a cycle worth busting, experts say, with depression, anxiety and stress a common co-occurrence.

Ophthalmology

Researchers uncover a critical early step of the visual process

The key components of electrical connections between light receptors in the eye and the impact of these connections on the early steps of visual signal processing have been identified for the first time, according to research ...

page 1 from 12

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