Briefings

Technology Review's primers on key emerging technologies.

Social Networks

These online communities are redefining how we find and share information, but will operators be able to assuage privacy concerns?

More Briefings | Mobile Devices | Private Spaceflight | The Smart Grid | Mobile Communications | Fuels

A Photonic C-NOT Gate Breakthrough for Quantum Computing

Physicists have built a quantum logic gate that combines a quantum dot that fires photons with a photonic circuit that processes them

Humanoid Robot Swarm Synchronized Using Quorum Sensing

Proof-of-principle experiment shows how humanoid robots can co-operate on a large scale by copying the behavior of social insects and bacterial colonies.

First Simulation of Quantum Tunneling on a Quantum Computer

  • By kfc
  • 5/15/12

Quantum tunneling had always been thought too complex to simulate on today's simple quantum computers. Now a new approach to quantum computing has changed that and opens the door to more complex simulations.

Is Automation the Handmaiden of Inequality?

The odd coincidence of stagnating wages and a measure of productivity that excludes machines.

A Glimpse of Glasses-Free 3-D

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Technologies from National Instruments

Triggering
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Whitepaper

How To Measure Voltage

Voltage is the difference of electrical potential between two points of an electrical or electronic circuit, expressed in volts. It measures the potential energy of an electric field to cause an electric current in an electrical conductor.

Most measurement devices can measure voltage. Two common voltage measurements are direct current (DC) and alternating current (AC).

Learn the fundamentals of creating an AC or DC voltage measurement system. See how to properly connect the signals to your data acquisition system for accurate acquisition.

This document is part of the How-To Guide for Most Common Measurements centralized resource portal.

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