portability articles
When did Michael Faraday conduct crucial experiments demonstrating electromagnetic induction?
What did Hippolyte Pixii create in 1832 based on Faraday's findings?
What breakthrough allowed early DC generators to become self-sufficient for continuous operation?
Who independently developed the self-exciting dynamo concept around the 1860s?
What was the primary significance of Zénobe Gramme's machine introduced in 1871?
Thomas Edison’s massive dynamos were primarily designed for what purpose?
What mechanical development was essential for achieving true portability in power generation?
The portable generator is best described as a convergence of which two elements?
What critical step toward modern usability does the Automatic Voltage Regulator (AVR) provide?
How do modern inverter generators achieve greater fuel economy compared to traditional open-frame models?
Who is credited with inventing the electrocardiogram machine around 1903?
In what approximate year was Willem Einthoven's initial electrocardiogram machine first developed?
What sensitive instruments characterized the initial working iteration of the ECG principle?
What was required to immerse the early string galvanometers for stable readings?
Approximately how much weight could the original, stationary ECG setup weigh?
What early concept involved transmitting ECG signals remotely before ambulatory monitoring?
Which physician is famously associated with inventing the Holter monitor in the 1950s?
How long was the Holter monitor typically designed to record heart activity continuously?
What conceptual shift defines the transition from Holter monitoring to modern portable ECGs?