Fluorosis is a cosmetic condition that affects the teeth. Itâs caused by overexposure to fluoride during the first eight years of life. This is the time when most permanent teeth are being formed. After the teeth come in, the teeth of those affected by fluorosis may appear mildly discolored.
The eye that shows up in mature hurricanes represents the center of the storm. Counterintuitively to some, the eye represents an area of the hurricane where there is little to no precipitation, the sun or stars can be visible for a time, and the winds are light.Also within the eye is the lowest barometric pressure associated with the hurricane.The eye of a hurricane can range in size from about 5 miles (8 km) up to as wide as 120 miles (200 km) in diameter; however, a typical size is usually about 20-40 miles (30-60 km).he eye that shows up in mature hurricanes represents the center of the storm. Counterintuitively to some, the eye represents an area of the hurricane where there is little to no precipitation, the sun or stars can be visible for a time, and the winds are light.
Winds in the eye wall itself have the highest velocity and this zone can extend outward from the center to distances of 16 to 40 km. Hurricane force winds (winds with velocities greater than 119 km/hr) can extend out to 120 km from the center of the storm. The largest tropical cyclone recorded, Typhoon Tip, had tropical storm force winds (39 mph/62 km/hr) which extended out for 1100 km in radius in the Northwest Pacific in 1979. Hurricane Katrina, in 2005, was a large hurricane with tropical storm force winds extending outward from the eye about 320 km.