Ek is nou in derde jaar universiteit en kom steeds partykeer terug na meneer se videos net omdat dit n goeie herrinering is van my laerskool dae haha. Hoop als is goed by meneer!
Ek onthou vir jou Hannes! Die tyd gaan so vinnig verby. Dankie vir jou boodskap. Dit gaan goed hier, ons werk net baie hard. Ek hoop dit gaan goed op universiteit. Is jy op Stellenbosch? Nou ja, goedgaan!
@@fish9529 Gaan als goed hier meneer. Ek's eintlik in Kanada by University of Victoria. Ek studeer politiek en geskiedenis, gaan volgende jaar law school toe want mens nodig eers n bachelors voor law hierso. Sterkte met die baie werk!
Hi it is good info for land surveyors you have mentioneed magnatic declination of diffrent cityes, can you explain how we can calculate declination between true and grid north?
1.May i ask google map and google earth is True North, Magnetic North, Grid North? 2.how to convert the data of Grid North to Magnetic North on the map? thank a lot
I just forgot that we have 3 north ⬆️ so that means our compass 🧭 is right with 0/360° north ⬆️ because the lines of longitude has 90° north of the pole meridian line
How many meters would you be off in 1 kilometer for 1 degree declination error? In the US its 92 feet in 1 mile . Just curious what the metric equivalent is.
@@LordBagdanoff Here's a link that explains it: aviation.stackexchange.com/questions/46231/at-what-distance-from-magnetic-north-do-pilots-start-referencing-true-north-for
@@LordBagdanoff Thanks for the idea! So what do you need it for? Here's another very interesting article: www.boldmethod.com/blog/learn-to-fly/aircraft-systems/how-your-magnetic-compass-works/#:~:text=Since%20the%20beginning%20of%20flight,cockpits%20of%20almost%20any%20aircraft.
Hi, sorry for the late reply. The difference between true north and magnetic north isn't always the same - it depends where you are on earth, and it can also change over time. It changes over time because the magnetic field of the earth changes, which causes the needle of the compass to point in a slightly different direction. It can also be to the left or to the right, depending on where you are on earth, etc. The second question: North (let's use true north) is always that place referred to at 0:42 in the video. So it doesn't matter where you are on the earth, if you travel to the north (true north), you will always travel in the direction leading to this place (indicated at 0:42). I hope this answers your question.
That's a very interesting question! Your question has made me think - true north and magnetic north are both natural as we use natural things to find it. However, those grid lines we see on maps were indicated by humans. Therefore, technically one can say that grid north is unnatural. I still think it is fine to use as a reference since it's still very close to true north, and in certain cases even 100% accurate. Thanks for the question and may the studies go well!
@@fish9529 Thank you. The way you explained it was beautiful, even down to your video. Awesome 🎥 by the way. You know they say everyone has a piece to the puzzle, and eye have founded that piece by watching your video. Thank you so much. Peace and love❤.
I still don't understand why grid north is ever different from true north. On, say, a Mercator projection, every longitude line points directly to true north, right?
Good question. It all comes back to the fact that a map is flat and the earth is round. In order to take a round earth, or a sphere, and present it on a flat piece of paper, certain things like the shape and size of land, as well as angles are pulled out of proportion. Therefore, grid north will also be slightly inaccurate in certain cases. I hope this answers your question.
However, I must add that direction is rather well preserved on the Mercator projection. The relative size of the land is not well preserved at all, but this projection is known to be used for navigation purposes.
@@fish9529 Isn't grid north perfectly preserved on Mercator (i.e. the same as true north)? After reading more it seems like grid north is only different on non-mercator projections where "up" is not always true north.
@@Norsilca I'll be honest, I'm not certain if it's perfectly preserved, but if it is not perfect then it is certainly very close. I have read quite a bit about this and it gets quite technical, but I'll try to read more on this topic and reply to you once I have a definite answer. What I do know is that the Mercator projector is commonly used for navigation, which tells me that it must be either 100% accurate or very close to that.
Since it is so close to True North, many people argue that it can be used for navigation. In certain cases it is exactly the same as True North. So you can use it for navigation as well as bearings.
Why is there a difference between Grid north and True north? If GN is based on Longitude, then what is True north based on? I understand the relation between GN and Long., but I thought TN was based on longitude also.
Hi there, the difference between TN and GN is very small, as you probably know. This difference has to do with the fact that maps are a flat representation of the earth, so this difference is due to the distortion that comes into play when projecting the earth, or a part of the earth, onto a flat surface. Below is a link that might help. Just scroll down a bit once you have clicked the link. www.physicsforums.com/threads/why-grid-north-doesnt-agree-with-true-north-on-maps.873283/
@@fish9529 Thanks, Fish! That link has some good info by contributor SteamKing, along with the usual internet bickering :) but definitely a great source to read more.
South African teachers are the best! thanks for another simple yet difficult to capture from other English sources video!
Thank you for the comment. I'm working abroad and miss my country so much. Anyway, all the best with the studies!
Not just South African, but Afrikaans speaking South Africans ;)
Thank you for this! I struggle a lot with Geography, so this really helped me!
I'm glad it helped. All of the best with the studies!
OMG 😱 This helped me soooo much! Finally I can understand what’s going on in my classroom 🤣😅
I'm glad it helped. All of the best with the studies!
If magnetic north changes is there a pattern to that change 🤔 😉
Thank you!
You are one of the few that mentions why people use grid north as true north but that there IS a difference.
Thanks for the comment; I'm glad you found the video helpful.
This is one of the best explanations. You are awesomely clear! Thank you!
Thanks for the feedback. May the studies go well!
You are a good person to explain this topic wonderful, thank you so much, you really helped me a lot. God bless
Hi, don't know why I didn't reply earlier. May God bless you too!
THanks for this video. I've never heard it called magnetic declination, only magnetic variation. Good to know both terms for this.
You're welcome, may the studies go well!
Thanks to you man, I got 82% for geography
That sounds great, thanks for the feedback!
@@fish9529 If you told him about Flat Earth 99%, you held him back...
@@milanm2239 lol
Your lessen are so helpful ; they are helping so much
I'm glad to hear that. May the studies go well!
Grid north was throwing me off. Thanks!
Very informative vedio, bundle of thanks.
You're welcome. Thanks for the feedback!
THANK YOU. ive been struggling with that but I understand it now
For anyone wondering, this man's accent is an Afrikaans South African accent (as opposed to a native English speaking South African's accent).
I know I'm late to this video but thanks for this, it's a great explanation. subbed/belled.
Thanks for the comment, and welcome to my channel!
It's really helpful
I'm glad you find it helpful. May the studies go well!
Come on people...hit the LIKE button! ...23,000 views and only 484 likes? Great video !
Ek is nou in derde jaar universiteit en kom steeds partykeer terug na meneer se videos net omdat dit n goeie herrinering is van my laerskool dae haha. Hoop als is goed by meneer!
Ek onthou vir jou Hannes! Die tyd gaan so vinnig verby. Dankie vir jou boodskap. Dit gaan goed hier, ons werk net baie hard. Ek hoop dit gaan goed op universiteit. Is jy op Stellenbosch? Nou ja, goedgaan!
@@fish9529 Gaan als goed hier meneer. Ek's eintlik in Kanada by University of Victoria. Ek studeer politiek en geskiedenis, gaan volgende jaar law school toe want mens nodig eers n bachelors voor law hierso.
Sterkte met die baie werk!
Dit klink opwindend! Sterkte met als daar 😉
Hi it is good info for land surveyors you have mentioneed magnatic declination of diffrent cityes, can you explain how we can calculate declination between true and grid north?
If you get the answer to your question, please let me know. Thank you
what are some reasons why Magnetic declaration varries
Can you do a video explaining a synoptic chart?
I think someone else has also requested this. Thanks for the suggestion, I'll make a mental note. All of the best with the studies!
1.May i ask google map and google earth is True North, Magnetic North, Grid North?
2.how to convert the data of Grid North to Magnetic North on the map?
thank a lot
I just forgot that we have 3 north ⬆️ so that means our compass 🧭 is right with 0/360° north ⬆️ because the lines of longitude has 90° north of the pole meridian line
great now i understand my iPhone compass true north
Hi sir! do you have geomorphology , mass wasting and climatology lesson
Hi, no unfortunately I haven't made any videos on these topics. Who knows, maybe I can post some of these at a later stage. Thanks for the comment!
yo, fish the LEGEND
Have a nice weekend! 😉
at 1:24 is that a reversed magnet? isn't north pole upward?
Sir can you make a video on map projections. Also can you explain Mercator Projection and Lambert's projection
I'm actually planning to do that, but I haven't thought of adding the Lambert projection, so thanks for the suggestion. All the best with the studies!
@@fish9529 Thankyou so much Sir.
Very coooool!
I'm glad you like it 😉
How many meters would you be off in 1 kilometer for 1 degree declination error? In the US its 92 feet in 1 mile . Just curious what the metric equivalent is.
28 meter. 1 foot = 0,304 meter >> 92 / 0,304 = 28 meter
Do pilots use magnetic or true north for navigation?
@@LordBagdanoff It seems more complicated than that. They actually use both.
@@LordBagdanoff Here's a link that explains it: aviation.stackexchange.com/questions/46231/at-what-distance-from-magnetic-north-do-pilots-start-referencing-true-north-for
@@fish9529 would be good if you could make a video on it
@@LordBagdanoff Thanks for the idea! So what do you need it for? Here's another very interesting article: www.boldmethod.com/blog/learn-to-fly/aircraft-systems/how-your-magnetic-compass-works/#:~:text=Since%20the%20beginning%20of%20flight,cockpits%20of%20almost%20any%20aircraft.
@@fish9529 thanks for sharing! More for general knowledge!
Is the true north 18° left of magnetic north? Is that measured from the centre / middle of earth?
Hi, sorry for the late reply. The difference between true north and magnetic north isn't always the same - it depends where you are on earth, and it can also change over time. It changes over time because the magnetic field of the earth changes, which causes the needle of the compass to point in a slightly different direction. It can also be to the left or to the right, depending on where you are on earth, etc. The second question: North (let's use true north) is always that place referred to at 0:42 in the video. So it doesn't matter where you are on the earth, if you travel to the north (true north), you will always travel in the direction leading to this place (indicated at 0:42). I hope this answers your question.
Would you say grid north is unnatural?
That's a very interesting question! Your question has made me think - true north and magnetic north are both natural as we use natural things to find it. However, those grid lines we see on maps were indicated by humans. Therefore, technically one can say that grid north is unnatural. I still think it is fine to use as a reference since it's still very close to true north, and in certain cases even 100% accurate. Thanks for the question and may the studies go well!
@@fish9529 Thank you. The way you explained it was beautiful, even down to your video. Awesome 🎥 by the way. You know they say everyone has a piece to the puzzle, and eye have founded that piece by watching your video. Thank you so much. Peace and love❤.
I still don't understand why grid north is ever different from true north. On, say, a Mercator projection, every longitude line points directly to true north, right?
Good question. It all comes back to the fact that a map is flat and the earth is round. In order to take a round earth, or a sphere, and present it on a flat piece of paper, certain things like the shape and size of land, as well as angles are pulled out of proportion. Therefore, grid north will also be slightly inaccurate in certain cases. I hope this answers your question.
However, I must add that direction is rather well preserved on the Mercator projection. The relative size of the land is not well preserved at all, but this projection is known to be used for navigation purposes.
@@fish9529 Isn't grid north perfectly preserved on Mercator (i.e. the same as true north)? After reading more it seems like grid north is only different on non-mercator projections where "up" is not always true north.
@@Norsilca I'll be honest, I'm not certain if it's perfectly preserved, but if it is not perfect then it is certainly very close. I have read quite a bit about this and it gets quite technical, but I'll try to read more on this topic and reply to you once I have a definite answer. What I do know is that the Mercator projector is commonly used for navigation, which tells me that it must be either 100% accurate or very close to that.
Sir,
Where do we use Grid North??
Since it is so close to True North, many people argue that it can be used for navigation. In certain cases it is exactly the same as True North. So you can use it for navigation as well as bearings.
Why is there a difference between Grid north and True north? If GN is based on Longitude, then what is True north based on?
I understand the relation between GN and Long., but I thought TN was based on longitude also.
Hi there, the difference between TN and GN is very small, as you probably know. This difference has to do with the fact that maps are a flat representation of the earth, so this difference is due to the distortion that comes into play when projecting the earth, or a part of the earth, onto a flat surface. Below is a link that might help. Just scroll down a bit once you have clicked the link. www.physicsforums.com/threads/why-grid-north-doesnt-agree-with-true-north-on-maps.873283/
@@fish9529 Thanks, Fish! That link has some good info by contributor SteamKing, along with the usual internet bickering :) but definitely a great source to read more.
@@fish9529 Is there a formula to convert true north to grid north?
Spinning globe?
Hi mr. Neil
Hi, who is this?
Eiq
Good to hear from you Eiq, hope you are doing fine 😉
Thankyou
I knew I wasn’t crazy cause the North Star is now on the south
LEKKER MNR
Isja!
Heaven is in the north
Earth doesn't spin
Make your research, true north ain't where you think