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| Public domain image from Canva |
The Google Maps measuring tool can be used to measure the distance between two points, and the result is displayed in feet and metres. Alternatively, values are displayed in miles and kilometres if a user zooms out to view a greater-sized region of the map.
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| © Eugene Brennan |
Resistors are ubiquitous components in electronic circuitry both in industrial and domestic consumer products. Often, in circuit analysis, we need to work out the values when two or more resistors are combined. In this tutorial, we'll work out the formulas for resistors connected in series and parallel.
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| Gas distribution network in central Kilcullen from the interactive Dial Before You Dig website. Image courtesy Gas Networks Ireland. |
On 4th March last year, a press release was issued by Uisce Éireann to media and local public representatives to the effect that:
“Civil Engineers are carrying out pre-work activities on the 225mm pipeline, which involves a localised crossing over the High Transmisison (sic) Gas main under the supervision of Gas Networks.”
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| Immersion heater terminal box. © Eugene Brennan |
So I was doing some gardening for the sister today and she mentioned a smell that was coming from her immersion. This immediately rang alarm bells in my engineering head, knowing what was likely to have happened—So I investigated.
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| Credit: NASA/JPL-Caltech |
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| Forces on a falling insect. © Eugene Brennan |
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| Image by permission Weller Tools |
Soldering is a fundamental skill essential to learn when building electronic circuits or fixing circuit boards.
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| Kippure in the Wicklow Mountains, photographed from Kilcullen. © Eugene Brennan |
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| Original uncaptioned image Lurens, public domain image via Pixabay.com |
Icebergs can be massive, but did you know that you're only seeing literally the tip of them above the water? Yes, up to 90% of an iceberg's volume can be under water. But why does that amount sink and not just float above sea level like the rest of it? In this article we explore why.
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| © Eugene Brennan |
We often hear about analogue and digital in the context of communications, sound recording, cameras, TV, radio, and electronic devices. But what exactly is the difference, and is digital better than analogue? Why has digital replaced analogue in audio, digital imaging, and electronic communication?
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Why is binary used in electronics? Geralt via Pixabay.com |
The binary numbering system is the basis for the storage, transfer and manipulation of data in computer systems and digital electronic devices. This system uses base 2 rather than base 10, which is what we are familiar with for counting in everyday life.
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| Binary number and its decimal equivalent. © Eugene Brennan |
The base 2, or binary numbering system is the basis for all binary code and data storage in computing systems and electronic devices. This guide shows you how to convert from binary to decimal and decimal to binary.