Differences between revisions 2 and 7 (spanning 5 versions)

Double Refraction in Calcite, 6H35.15

Topic and Concept:

Birefringence, 6H35. Birefringence

Location:

Cabinet: Optics (OP)
Bay: (A1)
Shelf: #1

Abstract:

Rotate crystal of calcite (also known as Iceland Spar) above printed text. Two images are visible; one remains fixed as the crystal is rotated, the other circumnavigates the first.

In the above left picture, see the "S" in "Spar" forms two images, which lie on a diagonal line running from upper left to lower right.

In the above right picture, the two images of the "S" now lie on a diagonal line running from upper right to lower left.

The fixed image is due to the so-called "ordinary" ray. The mobile image is due to the so-called "extraordinary" ray. (It's not easy to tell in the above pictures which image is fixed and which is mobile).

If a linear polarizer is available, it can be used to show that each ray is polarized, and that the angles of polarization of the two rays differ by 90°.

Equipment	Location	ID Number

Calcite crystal	ME, Bay B1, Shelf #2
all other parts	ME, Bay B1, Shelf #2
...	ME, Bay A5, Shelf #2

Important Setup Notes:

Setup and Procedure:

List steps for setup then procedure.
...

Cautions, Warnings, or Safety Concerns:

Discussion:

Discuss the physics behind the demonstration, explaining some of the various steps of the demonstration when appropriate.

attachment: photo

Videos:

Lecture Demonstration's Youtube Channel

References:

List any references

Home

-  ⇤ ← Revision 2 as of 2016-06-14 20:15:30 → 
  Size: 1563
  Editor: JamesReardon
  Comment:
+   ← Revision 7 as of 2016-06-14 20:32:18 → ⇥
  Size: 2544
  Editor: JamesReardon
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 2:
-||<:30%>[[PiraScheme#Mechanics| Table of Mechanics Demonstration]]||<:30%>[[MEEquipmentList| List of Mechanics Equipment & Supplies]]||<:30%>[[Demonstrations|Lecture Demonstrations]]||
+||<30%  style="text-align:center">[[PiraScheme#Mechanics|Table of Mechanics Demonstration]] ||<30%  style="text-align:center">[[MEEquipmentList|List of Mechanics Equipment & Supplies]] ||<30%  style="text-align:center">[[Demonstrations|Lecture Demonstrations]] ||
-Line 5:
+Line 6:
+'''Topic and Concept:'''
-Line 6:
+Line 8:
-'''Topic and Concept:'''
  Birefringence, [[Polarization#Birefringence| 6H35. Birefringence]]
+ . Birefringence, [[Polarization#Birefringence|6H35. Birefringence]]
-Line 10:
+Line 11:
-Line 12:
+Line 14:
- * '''Shelf:''' #1 

attachment: mainPhoto
+ * '''Shelf:''' #1
 {{attachment:CalciteView1A.jpg}} {{attachment:CalciteView1PlusPiOver2A.jpg}}
-Line 18:
+Line 19:
-Insert succinct description of demonstration.
+Rotate crystal of calcite (also known as Iceland Spar) above printed text.  Two images are visible; one remains fixed as the crystal is rotated, the other circumnavigates the first.
-Line 20:
+Line 21:
-||<:style="width: 60%" :40%>'''Equipment'''||<:30%>'''Location'''||<:25%>'''ID Number'''||
+In the above left picture, see the "S" in "Spar" forms two images, which lie on a diagonal line running from upper left to lower right.

In the above right picture, the two images of the "S" now lie on a diagonal line running from upper right to lower left.

The fixed image is due to the so-called "ordinary" ray.  The mobile image is due to the so-called "extraordinary" ray.  (It's not easy to tell in the above pictures which image is fixed and which is mobile).

If a linear polarizer is available, it can be used to show that each ray is polarized, and that the angles of polarization of the two rays differ by 90°.

||<40%  style="text-align:center">'''Equipment''' ||<30%  style="text-align:center">'''Location''' ||<25%  style="text-align:center">'''ID Number''' ||
-Line 22:
+Line 31:
-||apparatus||[[MechanicsCabinetBayB1| ME, Bay B1, Shelf #2]]|| ||
||all other parts||[[MechanicsCabinetBayB1| ME, Bay B1, Shelf #2]]|| ||
||...||[[MechanicsCabinetBayA5| ME, Bay A5, Shelf #2]]|| ||
+||Calcite crystal ||[[MechanicsCabinetBayB1|ME, Bay B1, Shelf #2]] || ||
||all other parts ||[[MechanicsCabinetBayB1|ME, Bay B1, Shelf #2]] || ||
||... ||[[MechanicsCabinetBayA5|ME, Bay A5, Shelf #2]] || ||
-Line 27:
+Line 36:
-'''''Important Setup Notes:''''' 
 *  '''''  '''''
-Line 31:
+Line 38:
-'''Setup and Procedure:'''
+'''''Important Setup Notes:'''''

 * '''''  '''''

'''Setup and Procedure:'''
-Line 37:
+Line 48:
- *
+ *

'''Discussion:'''

Discuss the physics behind the demonstration, explaining some of the various steps of the demonstration when appropriate.
||attachment: photo ||attachment: photo ||attachment: photo ||attachment: photo ||
-Line 40:
+Line 57:
-'''Discussion:'''
-Line 42:
+Line 58:
-Discuss the physics behind the demonstration, explaining some of the various steps of the demonstration when appropriate.

||attachment: photo||attachment: photo||attachment: photo||attachment: photo||
-Line 47:
+Line 60:
-Line 53:
+Line 67:

fw: Diff for "Calcite"

Double Refraction in Calcite, 6H35.15