Author Archives: Martin Horejsi

The Vernier Go Direct Radiation Monitor: Well Worth the 90-Year Wait

Stephen Hawking died recently marking 2018 as another date in science history from which events will be measured. Isaac Newton was born in 1642, the same year Galileo died. And it is that 1642 date that is often used as … Continue reading

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The Carson MicroMini 20x Pocket Microscope: An ounce of magnification is worth a pound of words.

There are a surprising number of so-called “Pocket Microscopes” available today. I even remember pocket microscopes advertised in the pages of comic books back when I was a kid. And at that time, comic books were not targeting adult readers. … Continue reading

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The Carson SkeleScope: Less is More and More is Good

As the old saying goes, sometimes less is more. And such is the case with the Carson SkeleScope. Whether used to teach optics, engineering or perhaps even astronomy, having a clear view of the internals of a telescope can be … Continue reading

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The Vernier Three-Axis Magnetic Field Sensor: A Magic Wand for Magnets

What could be better than one anisotropic magnetoresistance magnetic field sensor? How about three anisotropic magnetoresistance magnetic field sensors and a Hall effect sensor as well! Pack them all into a lightweight watertight housing with a rechargeable battery and wired … Continue reading

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The Pasco Wireless Light Sensor: See the Light. And Measure it too.

Within an understated white plastic box is found a dynamic and versatile sensor that effectively measures many forms of light, and gives the science class a peek into how we learn about the universe we live in. Yes, the Pasco … Continue reading

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The TI-Innovator Rover: A Vehicle for Coding a Vehicle

With all the connectivity possible built into the TI-Innovator Hub, it was inevitable that programable motorized peripherals would become available for I-Hub. And that day has arrived. Texas Instruments, the maker of the ubiquitous graphing calculators like the TI-84, has … Continue reading

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It’s more than just power, it’s teaching potential: Vernier Go Direct Sensors and Micro USB Charging

Power powers. It’s that simple. With all our digital tools, there is at least one common thread across it all and that is we need a flow of electrons to keep the teaching and learning in high gear. But of … Continue reading

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Videographing with The PocketLab: Experimental Imagination Unplugged

Imagine a little white box of about 30 cubic centimeters or a third of the size of a deck of cards. And only 23 grams. Now imagine that that little box can effortlessly and wirelessly measure and share data about … Continue reading

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The Surefire FirePak: A Smartphone Science Studio Lighting Solution

As smartphone cameras take on an ever-more sophisticated role in the science classroom, the technical limits of phone photography become more apparent. Luckily, a dose of strong light can overcome many problems as well as provide access to a world unseen by … Continue reading

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The goTenna Off-Grid Communication Device: Take A "Cell Network" on your next Field Trip

Imagine co-leading a science field trip indoors in a large museum with questionable cell coverage, or outside and too far from the nearest cell tower. The goTenna system allows you to directly contact another goTenna equipped teacher using their smartphone … Continue reading

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