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GCSE Chemistry · key term
An error in reading a scale caused by viewing it from an angle rather than directly at the level of the reading.
Used by OCR
Specification PAG 6 · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
Revise: General Apparatus and Measurement TechniquesLooking from above or below can shift the apparent reading along the scale; this is parallax error.
Read the bottom of a curved liquid meniscus at eye level to avoid parallax error.
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