Typical Wavelengths
Some typical wavelengths for midfrequency octave centers are shown in Table 3.2. Now suppose the temperature increases 20°F to 92.5°F.
Suppose we had “tuned” to the peak of a 1000-Hz standing wave in a room first at 72.5°F and then later at 92.5°F. The apparent frequency shift would be
where 1151 is the velocity (ft/s) at the temperature of measurement and 1.13 is the wavelength at the original temperature.
Related posts:
Photodetectors:Applications and Types of Detectors
Calculators for Electricity and Electronics:Schematic Symbols
4.5. THE MMF HARMONICS FOR INTEGER q
Leakage saturation influence on synchronous torques
Speed control of d.c. Motors:Electronic Speed Control Method for DC Motors
Jogging and inching:Jogging Circuits
Timing Relays
BASIC FRACTIONAL q THREE-PHASE A.C. WINDINGS
RADIO/WIRELESS:ANTENNAS
Strain and pressure:Interferometry
Fixed Appliance and Socket Circuits:Special Outlets
Summary of Certification for the Electricity and Electronics Field
Audio Amplifier Performance:The Three-Stage Architecture
BASIC POLE-CHANGING THREE-PHASE A.C. WINDINGS