light

[muskan]

how do we polarize any wave?

[Country Boy]

32 minutes ago, muskan said:

how do we polarize any wave?

You titled this "light".  Are you referring specifically to light waves rather than "any waves"?  Do you know what "polarize" means?

[Sensei]

For photons there is polarization by reflection.

http://hyperphysics.phy-astr.gsu.edu/hbase/phyopt/polref.html

 

[Strange]

Light can also be polarised by passing through certain types of crystals or other materials (e.g. a polarising filter as used in sunglasses).

[pavelcherepan]

11 hours ago, Strange said:

Light can also be polarised by passing through certain types of crystals or other materials (e.g. a polarising filter as used in sunglasses).

Or even simply reflecting off of any reflective surface.

[muskan]

I mean plane polarized light. 

[swansont]

5 minutes ago, muskan said:

I mean plane polarized light. 

Polarizers and reflections can produce plane polarized light.