Information or aberration?
By Brian Clegg
I don’t know if it’s because I’m a writer, but I don’t respond well to getting information from videos. In fact, I avoid them with some vigour. This also includes TV science programmes which I hardly ever watch – they take such a very long time to get across information that I could read the same stuff in a fraction of the time.
This being the case, I was not particularly well disposed to watching a video on the aberration of light and how astronomers have to allow for it. (Not chromatic aberration – the other one.) On the whole, it worked considerably better than I expected, mostly, I suspect, because it’s only just over 2 minutes long. I could, admittedly, still get the same information in 30 second reading, but the loss to unnecessary visuals was considerably less than usual.
The video uses a nice analogy with a skateboarder catching falling water drops to illustrate what’s going on. The presentation is cartoon style, which isn’t too bad, apart from the rather odd floating quill I only noticed when I did a screenshot to go on social media (and I also found James Bradley’s telescope a little unlikely).Oddly, the thing I found most interesting was the mention of how accurate Bradley had estimated the speed of light from this. I had always given the 19th century Fizeau and Foucault as the first accurate measures, but Bradley’s deviation from accuracy was about ten times better than Fizeau’s despite being over a 100 years earlier (admittedly, this might in part have been down to luck).
My only real complaint about the video was the voiceovers. These appeared to be computer generated and oddly switched from a UK voice to a US one part way through. This grated a little – I’d rather hear a more human spoken and consistent narration.
You can see the video here:
Image from Unsplash by Uriel Soberanes.
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Now Appearing is the blog of science writer Brian Clegg (www.brianclegg.net), author of Inflight Science, Before the Big Bang and The God Effect.
Source: http://brianclegg.blogspot.com/2026/03/information-or-aberration.html
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