Manually Focusable Logitech C270

Manually Focusable Logitech C270

Instructions for modifying a Logitech C270 so that one can adjust the focus manually. The Logitech C270 is an inexpensive all-purpose webcam with a fixed focus which is set at the factory to be used for face-to-face video meetings with…

Astronauts and Experts Physics Labs

Hybrid Physics Labs with “Astronauts” and “Experts”

College physics labs were conducted with half the students physically in the room, each working with a remote lab partner. Since this is similar to how NASA astronauts perform experiments on the International Space Station (ISS), those roles came to be…

Network Configuration for a Wi-Fi Access Point

Network Configuration for a Wi-Fi Access Point

This page describes how to configure the network interfaces for a Raspbery Pi running as a Wi-Fi Access Point (AP). This is just one step in a larger list of instructions, which can be found on the page Raspberry Pi…

Signing Documents with Adobe Acrobat Reader

Signing Documents with Adobe Acrobat Reader

It is possible to use Adobe Acrobat Reader to “sign” documents.  There are actually several levels of both security and complexity, so depending on what you want to do you can either choose the easiest, or the most secure (well,…

COVID-19 Educational Technology Glossary

The novel (i.e. new) coronavirus, SARS-CoV-2, has prompted novel (i.e. new) terminology in the field of educational technology.  To keep track of it all, I’ve started this glossary page, which I will update from time to time.   I welcome additions,…

Figure 1: Webcam pointed at a physics lab experiment, and shared via Blackboard Collaborate Ultra

Local+Remote Lab Classes

This article explains a potential way to teach physics lab classes in the time of COVID-19, in a way that gives students some hands-on experience with the equipment and preserves the collaborative element of working as lab partners. (750 words)…

Visualization of the Cislunar Potential

Visualization of the Cislunar Potential

In the past few days I’ve been following the playback of the Apollo 11 mission in “real time” (delayed exactly 50 years) at https://apolloinrealtime.org/11/.  Among all the news related to the 50th anniversary of the Apollo 11 moon landing I…

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