Note that the water is poured from the side on one end of the basin, and it drains in the direction of the pour., clockwise on the south and counter clockwise on the north.
Yeah, it’s a hoax.
I have seen those scammers in Quito.
Reminds me of the card games on the streets of New York.
The first test, on the Equator, the water was still, having been poured some time before and allowed to stabilize.
For the second test, South of the Equator, the water is poured into the upper right corner of the sink, which caused a clockwise flow, that was not allowed to stabilize before the plug was pulled, so the water swirled in a clockwise direction.
For the second test, North of the Equator, the water is poured into the lower right corner of the sink, causing a counter-clockwise flow, that was not allowed to stabilize before the plug was pulled, so the water swirled in a counter-clockwise direction.
It has everything to do with where the water is poured, not the location in relation to the border. Any location near the Equator is going to flow straight down if the water is permitted to stabilize before the plug is pulled.
When the video starts, the water has been sitting still, thus no swirl. When she moves to the later two positions, south and north, she never give the water a chance to lose it's energy from the pour in either direction. I heard in a lecture years ago, that it was nonsense, and that toilets have a swirl direction designed into them that is up to the designer which direction it goes, not polar gravity differences.
Wholeheartedly agree. While the coriolis effect is real, this drain-the-tub scam is pulled on every rube that comes down the pike. This also at least used to be common on US naval vessels, pulled on anyone who'd never crossed the Equator before.