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What some people call Transitions, a registered trademark, lens are designed and built to react to light levels. Low light the lens stay transparent, when bright light hits the lens the way the lens are made makes the lens change to the apropriate level of dark in a fraction of a second.
What else can I help you with?
What is ductile to brittle transition temperature of steel?
It varies. Firstly, it's only present in ferrittic steels like carbon steel, not in most kinds of stainless. Secondly, it depends on the grain size of the steel microstructure, with smaller grains giving a lower transition temperature. The third factor is alloying elements. Silicone and Nickel content tends to raise transition temperature. With modern steels the transition temperature is about -60 degrees celcius. Older steels may have a transition temperature at room temperature, or, more often, at 0 or -10 degrees.
Can the ac work in winter?
My husband is a heating and air tech and he checks and starts up air conditioners in all kinds of weather.
How is mark zuckerberg work contribute with science and technology?
I dont know and dont care tbh x
Why was a house invented?
actually the answer even a 3rd std. child knows it. just because 2 keep us safe from all weather conditions and animals however ther r now not many animals becauz nowadays v dont live in forests its just the olden tradition 2 keep us safe..........:D:D:D:D:D
How do you fix a blown amplifier?
you dont
Does Jason Aldean wear contact lenses?
no he dont wear contact lenses
What do you get by sharing an eye contact lenses?
Sharing contact lenses is very harmful and unhygenic. Please dont do this.
Can I get contact lenses if I dont use glasses?
i this yes
Are contact lenses good for you?
they let you see dont they?
Do lenses from glasses break easily?
no they dont its normal
What were early lenses called besides magnifier why?
i dont i just want to get the answer
How do you paint contact lenses?
you dont though you can buy colored contacts
Why are some igneous rocks dark and why are some dark?
i dont no
When will the cold weather end?
weather answer: when its hoter Sick answer: when u feel better but you could still carry the cold.
How can you control the amount of light enters the lenses?
you dont have to control it they are controlled by pupil and iris
When were the plastic spectacle Glasses lenses invented?
= plastic spectacle Glasses lenses invented 1934 =
How can you get dark s sonic in ssbb?
you dont
