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Questions and Answers
Which researcher deduced the possibility of the opposite effect of the piezoelectric effect?
Which researcher deduced the possibility of the opposite effect of the piezoelectric effect?
- Reginald Fessenden
- Lippman (correct)
- Jacques Curie
- Pierre Curie
Who discovered the piezoelectric effect in 1880?
Who discovered the piezoelectric effect in 1880?
- Alexander Belm
- Jacques Curie (correct)
- Pierre Curie
- Lippman
Who developed a working sonar system by 1914?
Who developed a working sonar system by 1914?
- Constantin Chilowski
- Paul Langelin
- Alexander Belm
- Reginald Fessenden (correct)
Which country was Sokolov from, who conducted the first NDT related experiment using through transmission?
Which country was Sokolov from, who conducted the first NDT related experiment using through transmission?
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When was ultrasonic testing of metals as we know it today made possible?
When was ultrasonic testing of metals as we know it today made possible?
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Who used higher frequency sonar for the detection of submarines in 1915?
Who used higher frequency sonar for the detection of submarines in 1915?
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