# 111 Wiki Sandbox

### From Physics 111-Lab Wiki

## Contents |

# Use this page for showing examples of problems and trying out features

## Checking equation editing 3/4/13

**Equation copied exactly from another wiki page displays correctly:**Use where n(E) is the intrinsic efficiency and the quantity in brackets (the product of *n* and the solid angle) is given in the NaI Crystal Information for a distance of *d* = 15 cm.

**Same equation with E changed to pi and 4 changed to 6: **Use where n(E) is the intrinsic efficiency and the quantity in brackets (the product of *n* and the solid angle) is given in the NaI Crystal Information for a distance of *d* = 15 cm.

## Uploading a photo 1/14/13

*E. coli* is propelled in liquids by a set of four or more helical flagellar filaments that arise from separate positions on the cell surface but intertwine to appear as a single flagellum in forward movement. A cell may lose its flagella under some conditions, and regenerate them under others. Although motile cells on a crowded slide may appear to be moving pretty randomly, a cell actually can modulate its swimmming to follow gradients of chemicals, temperature, or light. It accomplishes this by varying the ratio of two swimming behaviors. The first, called a "**run**", is swimming forward in a steady, mostly straight path. The second behavior, called a "**tumble**", is an erratic motion that causes the next run to be in a new direction, pretty much at random. If the cell senses that the environmental gradient is getting worse as it swims, then a tumbles are more frequent; if it is getting better, tumbles are less frequent. So motility of the cell is facultative and under at least crude directional control.

## Checking equation editing 1/14/13

**Equation copied exactly from another wiki page displays correctly:**Use where n(E) is the intrinsic efficiency and the quantity in brackets (the product of *n* and the solid angle) is given in the NaI Crystal Information for a distance of *d* = 15 cm.

**Same equation with n changed to g, 4 changed to 3:**Use where n(E) is the intrinsic efficiency and the quantity in brackets (the product of *n* and the solid angle) is given in the NaI Crystal Information for a distance of *d* = 15 cm.

**Same equation with pi and omega reversed, term 37 added.**Use where n(E) is the intrinsic efficiency and the quantity in brackets (the product of *n* and the solid angle) is given in the NaI Crystal Information for a distance of *d* = 15 cm.

## Checking equation editing 9/9/10

**Equation copied exactly from another wiki page displays correctly:**Use where n(E) is the intrinsic efficiency and the quantity in brackets (the product of *n* and the solid angle) is given in the NaI Crystal Information for a distance of *d* = 15 cm.

**Same equation with n changed to g:**
Use where g(E) is the intrinsic efficiency and the quantity in brackets (the product of *n* and the solid angle) is given in the NaI Crystal Information for a distance of *d* = 15 cm.

## Checking equation editing 4/19/10

**Equation copied exactly from another wiki page displays correctly:**Use where n(E) is the intrinsic efficiency and the quantity in brackets (the product of *n* and the solid angle) is given in the NaI Crystal Information for a distance of *d* = 15 cm.

**Same equation with pi changed to 5 in denominator:**
Use where n(E) is the intrinsic efficiency and the quantity in brackets (the product of *n* and the solid angle) is given in the NaI Crystal Information for a distance of *d* = 15 cm.

## Equation display problem reported 9/30/09.

This problem seems to be fixed, but equations that displayed improperly need to be changed in some way for the equation image to be replaced. If you make a change, then change it back again, the old incorrect image gets used. Not sure of a workaround here.

- -Tom

**Equation copied exactly from another wiki page displays correctly:**

Use where n(E) is the intrinsic efficiency and the quantity in brackets (the product of *n* and the solid angle) is given in the NaI Crystal Information for a distance of *d* = 15 cm.

**Same equation with pi changed to 2 in denominator displays the edit, but all subscripts are missing:**

Use where n(E) is the intrinsic efficiency and the quantity in brackets (the product of *n* and the solid angle) is given in the NaI Crystal Information for a distance of *d* = 15 cm.

**Same as first equation but added alpha square root of 2 to the end. The alpha displays, but square root symbol does not.**

Use where n(E) is the intrinsic efficiency and the quantity in brackets (the product of *n* and the solid angle) is given in the NaI Crystal Information for a distance of *d* = 15 cm.

*n* and the solid angle) is given in the NaI Crystal Information for a distance of *d* = 15 cm.

## How to use the References feature

Here is an example of use of the references tag.^{[1]}

A named reference can be used multiple times^{[2]}

Here is the second time it is used. ^{[2]}

## References

- ↑ This is the text of the reference.
- ↑
^{2.0}^{2.1}This reference is referred to multiple times

This item above, which you can not see yet so you must edit this area to see it, is a wiki link in the wiki that automatically indexes the items.

Note that this wiki as of March 12th, 2010 automatically indexes the references for you.
So If you want to edit the references go to the up arrow, on the wiki page, just after the number in the reference section, click on it and it will bring you to the sited location for that reference.
Then edit that section and you will see the links that correspond to the reference.
Don