# Standing Waves

## Standing Wave

A wave that does not appear to move. |

### Node

- is a point of rest.

occurs where the crest coincides with the trough = **Destructive Interference**

### Antinode

- is a point of maximum disturbance.
this occurs where 2 crests, or 2 troughs, coincide = **Constructive Interference**

## External Resources

Standing Waves
**Rating** 1 & 3.clear explanation and easily to understand

Harmonics:Open end air columns

## FYI

Heres a link thats like an online interactive textbook. Will answer any questions you might have..: http://www.glenbrook.k12.il.us/gbssci/phys/Class/waves/wavestoc.html (dhic014)

Another awsome link to teach you all about waves in pipes (closed and open) etc http://www.studyphysics.ca/newnotes/20/unit03_mechanicalwaves/chp141516_waves/lesson51.htm

A little handy hint to help remember each of the harmonics;

**For open-ended pipes:** the Number of Nodes = the harmonic number (the 3rd harmonic has 3 nodes) The Number of Antinodes = Number of nodes + 1 (3 nodes and 4 antinodes)

A link all about standing waves http://hyperphysics.phy-astr.gsu.edu/Hbase/waves/standw.html