Physics A-Level
Displacement–position envelope
What Displacement–position envelope means in Physics A-Level, as defined for OCR.
Definition of Displacement–position envelope
Check what you remember
Read the wording for your board, then hide it and explain Displacement–position envelope in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
A graph at a fixed instant showing a sine or cosine curve with regularly spaced nodes and antinodes, crossing the axis at nodes and reaching maxima at antinodes.
Topics that use Displacement–position envelope
- Stationary waves (OCR A-Level)
Related terms
- Amplitude variation
- Antinode
- Boundary conditions and allowed patterns
- Displacement–time oscillation
- End correction in real tubes
- Energy storage rather than transfer
- Fixed versus moving patterns
- Fundamental frequency and harmonics
Using Displacement–position envelope in the exam
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