Stay in school kids.

Mindless garbage. Polaris has never had a declination of 90.0°. At the time Richard Norwood and others were refining the nautical mile, Polaris was more than 3° from 90°. Feckless simpleton.

Nope. Video image is just displayed backwards :-)

exactly my thinking, what if I have slow boat, and I travel 1min and not pass 1852m :D

@@T7oo What if I sailed north but the winds were strong and I actually ended up further south?

If you think about it, on a globe the latitude lines stay the same distance apart (1 degree/ 60 minutes apart) so that means if you drew a line every 1 minute they would also be equally spaced out.

e probably flipped the video after

@@Lowpropo which means he is a left hand writer.

Lol

No he is writing on a glass... it's a trick most of the online teacher does

It is different. 1 mile (Or 1 land mile) = 1,609Kms. So a mile is shorter than one nautical mile (1,852 - 1,609 = 203meters) by 203 meters (13.12%).

1 minute is not a unit of time. Each degree is split into 60 "minutes" but a minute is a measurement of distance not time

Presumably he's left handed, and inverts the video. His lady-buttoned shirt would evidence that.

@@hectorstable or he mirroed the video

That's what I said.

hectorstable ...no, you said he has inverted the video. That’s not the same as mirroring the video

@@hectorstable lefthanded?

No. It’s not a minute of Time, it’s 1 minute of Degrees. It’s a measurement of degrees. 1 degree is broken up into 60 minutes.

Why is he comparing degrees to seconds and miles to km. His explanation is already confusing enough

It's the grade 5 geometry. Angles are measured in units of a degree. The degree is subdivided into the subunit "minute". The minute in turn is divided into the second. 1 degree=60 minutes=3600 seconds.

The lines of latitude dont suddenly change when you reach land, you idiot.

You need to travel as fast as the earth rotates. As there are 60 minutes in an hour and 1 hour of arc = 15 degrees. The speed of travel would need to be 15° per hour. Or 360° (Around the earth) per 24 hours (per day). So travelling due west you would arrive just inside the Polish west border one hour (15°s) after setting off from the Milenium Dome, London. Approximately 647.19 miles an hour (1,041.56Kms/p/h). At sea level give or take a few ups and downs. At 1,000m altitude or 10,000meters the land milage would be greater. But the nautical milage would be the same. So a nautical mile does not depend how fast you travel. As a nautical mile is a measure of distance. So likewise the measure of distance does not depend on how fast you travel. So if I travel a measure of distance in a hot air balloon or in a jet aircraft, I would still have travelled the measured distance. Speed (how fast you travel) would just shorten or lengthen the time. So if you review the video and observe the teacher's teachings; he explains there is time involved ( 1 minute). So time is already factored in. So if I fired a hyperthetical rocket straight-up from the Milenium Dome at 0°E/W 51.30N at a thousand miles an hour and it reached the same coordinates 10 miles up in 10.6 minutes. It would have traveled zero nautical miles. So if you draw two straight lines forming a sharp acute angle of 1° then as the lines get further from point A (A = Angle where the lines meet) the distance of the length of a third line (third line forming a triangle) increases the further it is from 'A'. Yet the angle remains 1°. So if the side opposite 'A' is 1 mile, 10 mile or a 1,000miles the distance would still be 1°. A nautical mile is relative to 1 minute. (15° =60minutes, 1° = 4 minutes). So 1 minute = a quarter of a degree of arc. At 5cms from point 'A' a snail could slither the distance in about 5 seconds where as the International Space Station travelling at an average 17,227mph at an altitute of 205 to 255 miles above earths surface would require (92.68 minutes per 360 degrees) 2.574 minutes (177.4 seconds) to travel 36° 4.92 seconds per degree therefore 1.23 seconds to travel 1 minute or 1 nautical mile at ground/sea level. As long as you pushed the snail across the finish line to make sure the snail wasn't stopping for tea or taking a detor.

You might want to watch the video again and pay attention to the bit where I define the word "minute". In this case, minute is not a unit of time, it's an angular measure.

You're very welcome

It's not

I think you were right the first time. I'm writing on what is essentially a window.

@@JoelSperanzaMath Whoa.. backwards too?

To reach 1 nautical miles depends on boat speed. We need time from point A to point B on a sea to measure nautical mile. So if the boat reaches let's say constant speed of 20 knots( NM) then you will cross the distance of 20 NM (37km) in 60 min. So 20 knots speed is 37km/h on a water.

Oh look, a mindless flattard smearing himself across the comments section.

sam what does this mean? its keeping me up at night.

@@HarrisFamilyKids You know. Coldplay. The band? Hope this helped!

Sorry Sundar... there are minutes (Like time) and arc minutes (60 minutes in 1 degree). They are not related.

@@JoelSperanzaMath Sorry Joel... I think I was wrong. Knowing nothing about arc minute, I should not have commented on this. I completely withdraw my words. Thanks for your reply.