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Re: accessibility of the Old Bedford River. There shouldn't be any problem about accessibility of the end points, as these are public road bridges. The 'midway' marker is not quite so straightforward. There doesn't seem to be any proper footpath along the north-west bank of the river, which is...

Search on Google Earth for Tydd St Giles. There should be only one result. If you zoom in you should see a drainage channel to the east of the village. The main east-west street leads to a bridge over the channel. One end of my suggested line of sight starts on the north-west end of the...

I wonder does anyone have a view on the minimum distance needed for a viable Wallace-type experiment? I have been looking at Google Earth trying to identify an alternative to the Old Bedford River in case for any reason that is not practical. I take it that such an alternative would require a...

Another point I've belatedly noticed: most of the land in the relevant area is very low-lying. If Google Earth is to be believed (and in this case I don't see any reason to doubt it) much of it is actually below sea level. The river banks are in fact levees, a meter or more above the...

I have read somewhere - possibly in Christine Garwood's book - that Wallace originally planned to have five or six markers, at 1-mile intervals, and not just three. He set up the markers on the night before the experiment but the next day found that for some reason they were in disarray. (Blown...

Just in case it should prove impractical to use the Old Bedford River itself, I note that there are several other long straight waterways (canals or canalised rivers) in the same general area. For example there is a 6-mile stretch from (roughly) Outwell to Wiggenhall Saint Mary. It is crossed...

Here is another modern map of the area round Welney. http://www.britishwalks.org/walks/1999/054.php I have belatedly realised that on Google Earth (at least in the current version with imagery dated 1/1/2007) the land near Welney to the south-east of the Old Bedford River is actually flooded...

The history of the railway line is quite complicated, but the earliest date given in the Wikipedia article is for 1847, so Rowbotham could well have had an uninterrupted view to Welches Dam in 1838. However, I wouldn't take Rowbotham's reliability as given! There are some other odd...

I was just searching Google Images for 'Old Bedford Bridge', in the hope of identifying the 'target' bridge in the Wallace experiment. I didn't find it, because (surprise!) a search for 'Old Bedford Bridge' tends to mainly get results for old bridges in Bedford, which is not the same thing at...

It is an unavoidable part of flat earth doctrine that the government and space agencies of Russia, and formerly of the Soviet Union, are part of a global - sorry, world-wide - conspiracy to suppress the flat earth truth. So it is hardly likely that RT would be genuinely endorsing such a...

Just a word of warning on star trail time lapse photographs: some popular images on the internet, including several showing the south celestial pole with Sydney Opera House in the background, are composites. Searching Google Images for 'Sydney star trails', I would say at least half of the top...

Going back a bit further, there was the case of Georgi Markov, a Bulgarian dissident who was assassinated in London by a pellet containing ricin fired from an umbrella. https://en.wikipedia.org/wiki/Georgi_Markov#Later_investigation_and_aftermath This might seem like a joke out of The Man From...

In Anglo-American law, statements, including confessions, by a dying person (or one who believes he or she is dying) have traditionally been given special weight, and in some cases are admissible when other kinds of hearsay evidence would not be: https://en.wikipedia.org/wiki/Dying_declaration...

I don't have a problem with the existence of 'debris' as such, but I'm puzzled by the direction and rate of movement. All the debris seems to be going in much the same direction - broadly 'upwards' in the camera's field of view - but at somewhat different angles and rates. Assuming the...

Nice work. I wonder do you have any view on the point I raised in an earlier comment, about particles of some kind that appear to be 'floating' in the background of the spacecraft? There are some examples in this video, Source: https://www.youtube.com/watch?v=n-MhAWdZQrM&t=227s , between...

Sorry I can't give references, but I recall that some of the SpaceX footage showed what seemed to be small particles floating around the outside. Predictably, some people have claimed that these are air-bubbles in a water tank, like the one where NASA allegedly fake their space-walks. (Why...

Moving on a bit from the Greeks, the philosophers of the Middle Ages also (for the most part) believed that the earth is a sphere. The reasons they gave are concisely set out in the most popular astronomical text of the period, the Tractatus de Sphaera of John of Holywood [Sacrobosco], written...

Thanks. The optics of pinhole cameras are more complex than I thought. There is a useful article here explaining some of the complications: https://www.wesjones.com/pinhole.htm Whether the disadvantages of the pinhole camera would outweigh the advantages, for the specific purpose of...

A pinhole lens (which to be pedantic isn't a lens at all) could also be useful at lower altitudes. From a cliff or building a few hundred feet high, overlooking the sea, a slightly curved horizon should be visible if the field of view is wide enough. For example, from a height of 500 feet, and...

I noticed a recent (19 November 2017) article by David Mitchell (the comedian and commentator, not the novelist) in the (UK) Observer newspaper (the Sunday version of the Guardian), prompted by the so-called Flat Earth International Conference. A link to the article is here...