भूकम्प की तरंगों को अभिलेखित करने वाले उपकरण का क्या नाम है? What is the name of the device that records the seismic waves of Earthquake?

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भूकम्प की तरंगों को अभिलेखित करने वाले उपकरण का क्या नाम है? What is the name of the device that records the seismic waves of Earthquake?