Report for Experiment #14
Standing Waves
Kaleigh Schnell
Lab Partner: Jasmin Wilson
TA: Kunpeng Mu
November 29, 2016
Abstract
The lab performed this week focused on Standing Waves which are wave forms that appear
...
Report for Experiment #14
Standing Waves
Kaleigh Schnell
Lab Partner: Jasmin Wilson
TA: Kunpeng Mu
November 29, 2016
Abstract
The lab performed this week focused on Standing Waves which are wave forms that appear to be
stationary. Standing waves require reflections and wave interference. Wave interference occurs
through the superposition and reflections occur at the boundaries, or the ends of the string. If
there is a fixed end there is an inverted reflection and if there is a free end it is a non inverted
reflection. Reflected waves can interfere with incoming traveling waves to produce a standing
wave. There are two special points on a standing wave, the nodes which are points on the string
that do not move and antinodes which are points on the string that move through the entire
wavelength. The exact definition of a standing wave is a vibration of a system in which some
particular points remain fixed while others between them vibrate with the maximum amplitude.Introduction
The objective of this lab was to study standing waves of a string, to examine the relationship
between string tension and wave velocity, o study standing waves in an air column, and to
measure sound velocity. Understanding waves is important because they are natures favorite way
of transporting energy from one place to another, like storms that may rage in the middle of the
ocean whipping up waves and a day later pounding them across a beach. This wave energy can
travel for miles. Waves consist of peaks and valleys where there are high and low points with a
certain time in between them. In this particular lab we will be examining Standing Waves.
A standing wave pattern is a vibrational pattern created within a medium when the vibrational
frequency of the source causes reflected waves from one end of the medium to interfere with
incident waves from the source. This interference occurs in such a manner that specific points
along the medium appear to be standing still. Because the observed wave pattern is characterized
by points that appear to be standing still, the pattern is often called a standing wave pattern
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