====== Polarization ======
----

==== Malus' law ====

  * 1 optical rail
  * 2 post holders
  * Lamp (w/ LED bulb)
  * Polarizer on a post
  * Light intensity sensor on a post
  * Stick-on polarizer sheet (w/ magnet)
  * Adjustable +/-24 V power supply
  * 2 multimeters
  * 2 BNC to double-banana cables
  * 2 patch cords (1 red, 1 black)

| {{:phylabs:lab_courses:phys-120_130-wiki-home:spring-experiments:polarization:malus.jpg?400|}} |

**NOTE**: Make sure to test light sensors to make sure the batteries are not dead. Input bias should be set to -12 V (the maximal negative voltage) and the output should vary over the range of at about 0-100 mV as polarizer is varied.  Alignment is critical (check height and angle of light sensor), and try to block out extraneous light from the lamp.
==== Brewster's angle ====

  * Analog optical spectrometer
  * Glass slide with black tape in post holder
  * Polarizer cap
  * Lamp (w/ LED bulb)
  * USB webcam in mount
  * Dark cloth (not really needed, but nice to have)

| {{:phylabs:lab_courses:phys-120_130-wiki-home:spring-experiments:polarization:brewster.jpg?400|}} |

==== Retardation of phase ====

  * Lamp (w/ LED bulb)
  * Either...
    * Ring stand w/ 4 elements (green filter, polarizer, quarter waveplate, and another polarizer); or
    * Homemade/handheld polarization device w/ hanger attachments (quarter waveplate and green filter)
  * Objects to play with:
    * Calcite crystal
    * Bendable rubber material
    * Acrylic disk in clamp
    * Acrylic block with slit
    * Bottles of sugar solution
      * Glucose
      * Fructose
      * Corn syrup

| {{:phylabs:lab_courses:phys-120_130-wiki-home:spring-experiments:polarization:demo1.jpg?400|}} | {{:phylabs:lab_courses:phys-120_130-wiki-home:spring-experiments:polarization:demo2.jpg?400|}} |

==== Common area ====

  * Spare parts:
    * 2-3 multimeters
    * 1-2 spare light sensors (with working batteries)
    * A couple 9 V batteries
    * +/-24 V power supply
    * USB webcam with mount
    * Glass slides w/ black tape

| {{:phylabs:lab_courses:phys-120_130-wiki-home:spring-experiments:polarization:common_area.jpg?400|}} |