Why microwaving grapes creates a dazzling plasma light show | CBC News

It’s a crowd-pleasing party trick: Cut a grape in half, pop it in the microwave, hit “start” then sit back and watch the dazzling “grape balls of fire.” Now a team of Canadian scientists has figured out how grapes generate plasma in your kitchen.

Source: Why microwaving grapes creates a dazzling plasma light show | CBC News

How to Select and Use a Micropipet – submitted by Flinn Scientific Canada

Introduction

Measuring tiny volumes with precision and accuracy requires a micropipet. In the biology lab, micropipets are used for preparing and loading DNA samples, microscale experiments and the preparation of many types of samples. These applications rely on good technique to reduce error. This guide explains how to choose the proper micropipet for the application and techniques to help ensure that measurements are accurate and precise.

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Build the Simplest Electric Motor – submitted by Flinn Scientific Canada

Introduction

Hans Christian Oersted (1777–1851), a Danish physicist, was performing an experiment in 1820 when he noticed that whenever an electric current from a battery was switched on or off, a nearby compass needle was deflected. Through additional experiments, Oersted was able to demonstrate the link between electricity and magnetism. The following year, English scientist Michael Faraday (1791–1867) created a device that produced “electromagnetic rotation.” This device is known as a homopolar motor since the motor requires no commutator to reverse the current.

A motor converts electrical energy to mechanical energy. The simple motor in this activity changes the electrical energy output by the battery to mechanical energy as the copper wire is set into rotational motion. Any current-carrying wire produces an associated magnetic field. The electrons in the wire are subjected to a magnetic field and experience a force—referred to as the Lorentz force—that is perpendicular to both the magnetic field and the direction of movement. At some point along the length of the wire, the electrical current is not parallel to the magnetic field. The resulting Lorentz force is tangential and induces a torque on the copper wire. This torque causes the copper wire to spin.
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Nuclear fusion, a disruptive power source for crowded cities: Don Pittis | CBC News

Holy grail of power generation, commercial nuclear fusion could be “a decade away” creating a new disruption not just for fossil fuels but for traditional carbon free energy systems.

Source: Nuclear fusion, a disruptive power source for crowded cities: Don Pittis | CBC News

Does Electricity REALLY Flow? (Electrodynamics)

When charge moves, we call it electric current, but the word current is usually reserved for things like water flows. Does electric current really work like that? Electrons are quantum particles, so we have to be careful.

Source: https://www.youtube.com/watch?v=QKxep82_9b8&feature=youtu.be

 

Five-Minute Safety Inspection – submitted by Flinn Scientific Canada

Our “Five-Minute Safety Equipment Inspection” can be used to quickly and easily evaluate the readiness of laboratory safety equipment. According to the OSHA Laboratory Standard, safety equipment should be checked on a regular basis. It is a good policy to document all safety inspections. If problems are found, repairs should be made promptly.

Click here to go to the source of ‘Five-Minute Inspection’. 

Website:  https://www.flinnsci.ca/

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