@@gabrielpalacio6710 No The arcminute is 1.15 statute miles at the equator, the meridians reducing distance apart as we move north or south. Remember the Cosign part ?
I agree with "Pixer AB". My Dad use to say you can tell if someone REALLY understands what they are talking about if they can explain it in terms/pictures that are easy to understand by anyone and anyone can get it. Well done here!!
But doesn't the earth also tilt on it's axis (summer to winter) which means the true north pole also tilts? Does Polaris follow this tilt? Very good lesson by the way.
The Earth itself is not changing its tilt orientation during the seasons. The north geographic pole is always pointing toward Polaris. So, as the Earth revolves around the Sun, the Earth is tilted 23.5 degrees relative to the plane of the ecliptic (that is, relatively to the position of the Sun). During the summer solstice (June 21), the northern hemisphere is pointed toward the Sun. A half a year later (Winter Solstice, Dec 21), the Earth's tilt is in the same orientation, which means the northern hemisphere is now pointed away from the Sun (Winter Solstice, Dec 21). See the image on this page: courses.lumenlearning.com/astronomy/chapter/the-seasons/
Ken, this was a great presentation that put some great content into my noggin. One small bit of constructive criticism. Axis (singular) is pronounced axus... while axes (plural) is pronounced axEEz. I really hope to learn a lot from your content. You're a great teacher.
I've alway's wondered as to why when the line referred to as the equator is "LONGER" than the line circleing North to South. Is it not the "LONG ITUDE", While the shorter one going North and South is.
There are a lot of stars out there! Having a North Star is nothing amazing. Also, the Earth wobbles (it’s about a 20,000 year precession cycle). So, Polaris is not always the North Star.
Maybe it would be better to have a shorter video than a half hour video learning about 2 different things. I'm giving this a dislike because the writing just seems messed up and could u please say "longtitude" correctly? Thanks
From Wikipedia: A prime meridian, based at the Royal Observatory, Greenwich, in London was established by Sir George Airy in 1851. By 1884, over two-thirds of all ships and tonnage used it as the reference meridian on their charts and maps. In October of that year, at the behest of U.S. President Chester A. Arthur, 41 delegates from 25 nations met in Washington, D.C., USA, for the International Meridian Conference. This conference selected the meridian passing through Greenwich as the official prime meridian due to its popularity. However, France abstained from the vote and French maps continued to use the Paris meridian for several decades.
First of all I'd like to thank you for upIoading this video. I don't know much about geography and for this simple reason I find this video immeasurably helpful. But there is one thing I would be really thankful if you helped me with. When I tried to convert the figures into kilometers, which is more clear for me because kilometers are used to measure distances where I live, I faced a strange thing - 1 statutary mile = 1 nautical mile = 1.853 km. The information I found told me that there is some old metric system that says 1 mile = 1.609 km (((((((((((
Dear Prof. Yanow, Going back to your video and stop it at 8.34, I would like to know how we can possibly prove that the two angles you have drawn on that circle are congruent? Thank you
Both the American and British Stautory Mile are equal and are 1.760 yards. or 5,280 feet. The standard was agreed 1959 with the British Commonwealth nations and the United States. Chinese miles differ a great deal in length( approx 500 metres) . The origins of the Statute mile (read Statutory mile) are based on the Roman method of measuring paces made by the Soldiers as they made 'feet' steps. 1,000 paces being roughly equal to a mile. Hope this clarifies things.
If you haven't found your answer yet, I would like to help you. Are you interested? The answer to your last question is "no" you won't be able to see Polaris during the daytime.
Dear Professor, please reconsider your explantion (elaborate!) after your question at 3 minutes about the same points of Latitude ("..what about here, and here and here..." - not at all "OBVIOUS"!). You never explained how other points on the same line of Latitude can be derived (by means of using the line-length of the angle drawn away from the center and then reconstructed as a parallel with the a point at the end of the line at that angle anywhere on the equator). Sorry, to be so direct, but I found this section of your video to be a poor (incomlete) explanation. The rest is very good and well explained. Perhaps you would want to make a revised video or add this section, explaining this in more detail - thanks for your otherwise excellent video.
+Michael Berkemer I agree, I was also stuck there and it took me quite long to understand (I hope I did now). So the angle is calculated from "inside" the globe, I was thinking about in on the circular surface first ... very confusing, I am not sure how to say it.
Fantastic! and, thanks a lot, Prof. But could you brush up on your English, please? Longitude is not pronounced "logtitude". Neither should "nuclear" be pronounced "nukuler". America and Britain......two great nations divided by a common language !! Geoff Tyson
And Gas is Petrol. What about oxygen being a gas ? lol Come on guys, a little knowlege of our distant cousins please. The object of the video is to teach us how to navigate the world not instruct us in the art of language. Give the guy some credit for a job well done.
