How do transition lenses work?

Transitions lenses contain special patented photochromic dyes that cause the lens to activate, or darken, when exposed to ultraviolet rays from sunlight. When the UV light diminishes, the lenses fade back. As light conditions change, the level of tint adjusts, offering the right tint at the right time.

Which planet has the most oxygen?

Interestingly, there is also a lot of oxygen on Venus and Mars, which is perhaps not surprising, since they are the closest planets to Earth and probably formed in similar conditions. In their cases, however, most of the oxygen is there in the form of carbon dioxide.

Who was the first person to say hello?

The use of hello as a telephone greeting has been credited to Thomas Edison; according to one source, he expressed his surprise with a misheard Hullo. Alexander Graham Bell initially used Ahoy (as used on ships) as a telephone greeting.

Where was glitter invented?

A cattle rancher in New Jersey is credited for inventing glitter, and it was by accident. Henry Ruschmann from Bernardsville, New Jersey was a machinist who crushed plastic while trying to find a way to dispose of it and thus made glitter in 1934.

Who was the first American saint?

Elizabeth Ann Seton is canonized by Pope Paul VI at the Vatican in Rome, becoming the first American-born Catholic saint. Born in New York City in 1774, Elizabeth Bayley was the daughter of an Episcopalian physician.

Is pure water a conductor?

Pure water is not a good conductor of electricity. Ordinary distilled water in equilibrium with carbon dioxide of the air has a conductivity of about 10 x 10-6 W-1*m-1 (20 dS/m). Because the electrical current is transported by the ions in solution, the conductivity increases as the concentration of ions increases.

How many eggs to Octopus lay at a time?

Octopuses lay 56,000 eggs at a time. The mother spends six months so devoted to protecting the eggs that she doesn’t eat. The babies are the size of a grain of rice when they’re born.