No. It depends on the temperature gradient of the air, which is not a simple thing.Regarding the slideshow of how to determine refraction, it is the bold statement at the end where he states downward refraction cannot happen in the evening or night, I find that puzzling, is it valid ?.
Is there even such a thing as a PHD in spectrophotometry ?ll,y
As an aside, if this John D really is a doctor he surely has the skills to research geodetic survey methods and if he's so committed to the cause he could hire the requisite equipment to do this properly and debunk the whole field of surveying as well as the shape of the planet. Which is to say, I don't know why I've allowed myself to get even peripherally involved in feeding yet another troll. Why not just leave both sides to their constant bickering on Youtube?
It's a rather odd choice of an experiment if you want to see if the water surface is curved. It's by far the worst spot for the results to be messed up by refraction. It's also very hard to correct for those effects if you don't know what the temperature gradient is out to sea (where most of the light path is).Doesn't this just all seem mad? You can go into the i360 and literally see further as you go higher + it's inside out of the cold and 5 mins walk from the proposed observation points, nice view today as well.
Dark now. Not seeing any action on the beach...This one is pointing towards Worthing. You can see the old pier and the i360 tower.
They just showed the image from a P900 or P1000 (from quite high on the beach), and you see the refraction, as expected for cold air over warm ocean.The forecast is for 2-4°C, and 8°C water. If that were all there was to it then you'd expect an inferior mirage when viewed from 3 feet above the water, assuming the water warms the air directly above it, then cools at the normal lape rate.
John D posted a short video confirming that that's precisely what happened. Chalk one up for established science.The forecast is for 2-4°C, and 8°C water. If that were all there was to it then you'd expect an inferior mirage when viewed from 3 feet above the water, assuming the water warms the air directly above it, then cools at the normal lape rate.
The idea is that they want to observe if that bit of the ocean is curved. i.e. the 10 miles between Brighton and Worthing. Since it's a small bit, with only 17 feet of "bulge" in the middle (the sagitta), then you need to be low down to observe it.i might be stupid but what is the flat earth reasoning behind not just getting in the i360 and seeing more as you go up?
Uncheck the "night" box, and zoom out.Why is the laser beam visible? Isn't temperature gradient of air negative? So how is the laser beam seen?
It is.Why isn't it visible, even when we do the temperature gradient positive?!
What video are you referring to?They have released a video with some observations of it.
I think they have the idea that there's a zone for a few feet above the ocean where there's refraction, then above that there's no refraction.Plus I am not sure of their insistence of talking about the 'refraction zone'.
It's a curious type of teaching that includes so much name calling and emotional input. I can just imagine my 10th grade geometry teacher calling me a buffoon because i couldn't grasp his explanation of the volumne of the cylinder.It's a curious type of 'science' that includes so much defamation.