Reliable readings from Arduino voltmeters

Galvanometers, Electromechanical Voltmeters, and Ammeters

Further Readings Further Readings

“Baby Bollinger” (first name: Allen) was born to Anna and Allen Bollinger at the German-American Hospital in Chicago, Illinois. The seven-pound Baby Bollinger was diagnosed with multiple physical anomalies and became the first victim in a string of public infanticides of disabled babies committed by the head of staff at the hospital, Dr. Harry Haiselden. The doctor declared Baby Bollinger a “mo...

Measurement of Ac Voltages with Digital Voltmeters

A principle of using high-resolution digital voltmeters (DVs) HewlettPackard 3458A for the measurement of AC voltages in DCV range is described. The method of approximate synchronous sampling is used, having only one sample per cycle of a working frequency close to 16 Hz, when the mean value of one-third cycle is measured. The beginning of integration is shifted for the same interval for every ...

Arduino Etoys - a programming platform for Arduino on Physical Etoys

In the last fifteen years, the technological education has been essentially based on digital technology, leaving aside the use of concrete material. Still having excellent simulators of the physical world, working with concrete material allows the development of cognitive structures that digital doesn't offer. Moreover, these didactic resources allow highly participative group dynamics that hav...

Cancer Biology. Readings from Scientific American

65 countries, when the decision to uphold the Hippocratic oath might easily lead to personal danger. preceded by an introduction by Errol Friedberg, the director of the Cancer Biology Program at Stanford University. The articles are reprinted exactly as they were originally published, and were written by extremely well-known researchers who include The articles can be understood by anyone with ...