वह उपकरण जो एक भौतिक रूप के संकेतों को दूसरे भौतिक रूप के संकेतों में परिवर्तित करता है, क्या कहलाता है?

On what fundamental basis does a mass spectrometer separate ions?

Which feature of a digital multimeter is used to automatically change its internal measurement range to detect the correct voltage, current, or resistance of a circuit?

Which device directly utilizes the Seebeck effect to convert a temperature difference into an electrical voltage signal?