HD Lightning Clock

✔ Full HD images
✔ free
✔ Clock is 12h and 24h timezone compatible
✔ Clock shows the current day in you language
✔ No annoying app icon
✔ Click starts alarmer
✔ Setable writing color


To place the widget go to your widget menu and select the clock.

This free app is ad supported and may contain ads in the notification tray and/or home screen.

Lightning is an atmospheric electrical discharge (spark) accompanied by thunder, usually associated and produced by cumulonimbus clouds, but also occurring during volcanic eruptions or in dust storms. From this discharge of atmospheric electricity, a leader of a bolt of lightning can travel at speeds of 220,000 km/h (140,000 mph), and can reach temperatures approaching 30,000 °C (54,000 °F), hot enough to fuse silica sand into glass channels known as fulgurites, which are normally hollow and can extend some distance into the ground. There are some 16 million lightning storms in the world every year. Lightning causes ionisation in the air through which it travels, leading to the formation of nitric oxide and ultimately, nitric acid, of benefit to plant life below.

Lightning can also occur within the ash clouds from volcanic eruptions. or can be caused by violent forest fires which generate sufficient dust to create a static charge.

How lightning initially forms is still a matter of debate. Scientists have studied root causes ranging from atmospheric perturbations (wind, humidity, friction, and atmospheric pressure) to the impact of solar wind and accumulation of charged solar particles. Ice inside a cloud is thought to be a key element in lightning development, and may cause a forcible separation of positive and negative charges within the cloud, thus assisting in the formation of lightning.

The irrational fear of lightning (and thunder) is astraphobia. The study or science of lightning is called fulminology, and someone who studies lightning is referred to as a fulminologist.