Enter Title

Mixed

100

Does blue light have a shorter or longer wavelength?

Shorter 

200

What is the main purpose for a hydrophobic coating lens?

Reduces fogging (rain, condensation, sweat)

300

What is the anti static coating also known as?

Electrostatic dissipative coating( ESD coating )

400

UV radiation ranges from around 100 to 380nm and is divided into the three groups, what are the three groups ?

UVC, UVA,UVB 

500

How can you determine if a lens is polarised? 

hold one polarised lens 90 degrees to another polarised lens, and it will block the light.