What is flashing light effect?

What is flashing light effect? Flicker vertigo, sometimes called the Bucha effect, is “an imbalance in brain-cell activity caused by exposure to low-frequency flickering (or flashing) of a relatively bright light.” It is a disorientation-, vertigo-, and nausea-inducing effect of a strobe light flashing at 1 Hz to 20 Hz, Read more…

What is Steeleye Span?

What is Steeleye Span? “[Martin Carthy] had suggested the name Steeleye Span to Tim [Hart] late one evening while staying at Tim’s family home, The Vicarage in St. Albans. The name comes from a Lincolnshire ballad called Horkstow Grange and is a story of an argument between John Bowlin and Read more…

Is mantle hotter than crust?

Is mantle hotter than crust? New data suggests that the upper parts of Earth’s mantle are around 60°C (108°F) hotter than previously expected. Previous estimates have put temperatures ranging from anywhere between 500 to 900°C (932 to 1,652°F) near the crust, to 4,000°C (7,230°F) closer to Earth’s core. What is Read more…