Dark adaptor goggles are one of the lesser known tools in the field of
meteorologyMeteorology is the interdisciplinary scientific study of the atmosphere that focuses on weather processes and forecasting . Studies in the field stretch back millennia, though significant progress in meteorology did not occur until the eighteenth century...
. They can be used for either adapting the eyes to the dark prior to an observation at night or to aid with the identification of
cloudA cloud is a visible mass of droplets or frozen crystals suspended in the atmosphere above the surface of the Earth or another planetary body. A cloud is also a visible mass attracted by gravity, such as masses of material in space called interstellar clouds and nebulae...
s during bright sunshine or glare from snow.
The
gogglesGoggles or safety glasses are forms of protective eyewear that usually enclose or protect the area surrounding the eye in order to prevent particulates, water or chemicals from striking the eyes. They are used in chemistry laboratories and in woodworking. They are often used in snow sports as...
are made of transparent, red tinted, plastic with an adjustable elastic strap to hold them in place. Although the goggles are designed to be worn inside some people find walking, especially up and down stairs, to be difficult.
For use at night the observer should put the goggles on about ten minutes prior to going outside.
Discussion
Ask a question about 'Dark adaptor goggles' Start a new discussion about 'Dark adaptor goggles' Answer questions from other users |
Dark adaptor goggles are one of the lesser known tools in the field of
meteorologyMeteorology is the interdisciplinary scientific study of the atmosphere that focuses on weather processes and forecasting . Studies in the field stretch back millennia, though significant progress in meteorology did not occur until the eighteenth century...
. They can be used for either adapting the eyes to the dark prior to an observation at night or to aid with the identification of
cloudA cloud is a visible mass of droplets or frozen crystals suspended in the atmosphere above the surface of the Earth or another planetary body. A cloud is also a visible mass attracted by gravity, such as masses of material in space called interstellar clouds and nebulae...
s during bright sunshine or glare from snow.
The
gogglesGoggles or safety glasses are forms of protective eyewear that usually enclose or protect the area surrounding the eye in order to prevent particulates, water or chemicals from striking the eyes. They are used in chemistry laboratories and in woodworking. They are often used in snow sports as...
are made of transparent, red tinted, plastic with an adjustable elastic strap to hold them in place. Although the goggles are designed to be worn inside some people find walking, especially up and down stairs, to be difficult.
For use at night the observer should put the goggles on about ten minutes prior to going outside. Once the observer is outside and away from major sources of light the goggles may be removed and the observers vision should be adapted to the dark.
To help with the identification of clouds during the day the goggles should be put on just before the observer goes outside. This will ensure the eyes are not affected by the
glareGlare is difficulty seeing in the presence of bright light such as direct or reflected sunlight or artificial light such as car headlamps at night. Because of this, some cars include mirrors with automatic anti-glare functions....
from the sun or snow.
At no time should the goggles be used to help assess the
visibilityIn meteorology, visibility is a measure of the distance at which an object or light can be clearly discerned. It is reported within surface weather observations and METAR code either in meters or statute miles, depending upon the country. Visibility affects all forms of traffic: roads, sailing...
.