Effect of Earth rotation on Gyro must be understood by us to evolve our free gyro into a Gyroscope. It needs no explanation that our Earth has its own magnetic field. Every object on/ at Earth is influenced by its magnetic force. So does our free Gyro. This post will discuss the effect of Earth rotation on Gyro at different locations on Earth viz. equator and pole when observed from space and Earth.
Effect of Earth Rotation on Gyro at Equator
The Effect of Earth rotation on Gyro needs to be understood before understanding how it settles to the meridian. Take a case in which the Gyro has been placed at equator with its axis indicating in the direction of east west. At this location, the gyro will achieve its highest tilt rate. The tilt rate in this will be 360 degrees in one day. Or you can say 15 degree with every hour passing by.
Fig. 1 – Effect of Earth Rotation of Gyro at Equator
On completion of twelve hours by a gyro at equator, We will get a delusion as if the gyro has altered its initial direction. However, in actual, this condition does not occurs. The only thing that has changed is the direction of the Earth (due to Earth’s rotation). This phenomena is often known as Gyro’s Apparent Effect.
Effect of Earth Rotation on Gyro at Equator Observed from Space
Imagine yourself in a space ship which is somewhere out in space and looking at the Earth’s South Pole. If you see the Earth with the South Pole in the center, the Earth’s rotation will appear to be in clockwise direction. Now change your ship’s position so that it is in line with the south pole and the south pole appears on the perimeter. You can now observe that the earth is completing its one rotation in 24 hours. We can observe it by making a big post (visible from space) on the equator also. Fig. 2 below refers to that.
Fig. 2 – Post on the Equator Viewed from Space
Now, assume a case in which the post is at 12 o’clock position, then due to Earth’s rotation, it will be at the right side to you at 18 o’clock (6 o’clock) position, behind you at 24 o’clock (12 o’clock), at left side to you at 6 o’clock position, and finally back to its initial place i.e. 12 o’clock position the next day. It should be noted here that we have observed here that this post acquires a lot of locations. And it is just because it does not have rigidity in space.
Now keep a Gyroscope in place of the post. This time you will observe some dissimilar action. Assume a condition in which the Gyro is placed in equator keeping the Gyro’s spinning axis in line with the Earth’s axis of east west. Now, in this case, the Gyroscope has both the properties which the post was not having i.e. it contains a spinning motion as well as the rigidity in space. Now, if you observe Fig. 3 below, the spin axis of Gyro is parallel (horizontal) w.r.t. the Earth’s axis in 12 o’clock position.
Fig. 3 – A Gyro on Equator Viewed from Space.
Similarly, spin axis of Gyro will be perpendicular w.r.t. the Earth’s axis in 18 o’clock (6 o’clock) position. Did you notice, the gyro has not changed its position w.r.t. earth. Till now, it is rotating in line with the initial axis in which it was placed. The spin axis of Gyro has the same plane as before. In the same way, the spin axis of Gyro will be parallel (horizontal) w.r.t. the Earth’s axis in 24 o’clock (12 o’clock) position and perpendicular in 6 o’clock position.
In this case study, we observed that as the Earth rotated, the direction of spin axis (Gyroscope) has not changed with it. Instead, it maintained its direction of spin axis. This could be possible due to the rigidity of Gyro in space.
Effect of Earth Rotation on Gyro at Equator Observed from Earth
Its time to return to the Earth. lol. This time, imagine yourself just beside the Gyroscope. If you observe from your position (refer Fig. 4 below), the spinning axis will appear to carry out one absolute rotation within 24 hour. You already know that Gyroscope has rigidity in space and the things which have rotation are yourself and the Gyroscope.
Fig. 4 – A Gyro on Equator Viewed from Earth
This is why this effect of the Earth’s rotation on a gyroscope is also called as Apparent Drift, Apparent Precession or Apparent Rotation.
Effect of Earth Rotation on Gyro at Pole
Similar to the Effect of rotation of the Earth in equator, if the Gyro is placed at pole keeping the Gyro’s spinning axis in line with the Earth’s axis, the gyro will achieve its highest drift rate of 360 degree in one day. Or you can say 15 degree of drift in an hour.
Fig. 5 – Effect of Earth Rotation on Gyro at Pole
- The Gyro will have highest tilt rate and lowest (nearly Zero) drift rate at equator.
- The Gyro will have highest drift rate and lowest (nearly Zero) tilt rate at poles.
- Tilt is created by HER*.
- Drift is created by VER**.
Fig. 6 – Vector Representation of HER and VER
Abbreviations used Above
*HER – Horizontal Earth Rate
**VER – Vertical earth Rate.
Also Read: Path traced by Gyroscope Undamped Oscillation of Gyro Settling Period of Gyro
Hey there! I’m at work surfing around your blog from my new iphone
4! Just wanted to say I love reading your blog and look forward to all your posts!
Carry on the fantastic work!
Thanks for appreciation. Good thing about it is that it always sounds good.
Thanks designed for sharing such a pleasant idea, piece of writing
is pleasant, thats why i have read it entirely
Just desire to say your article is as surprising.
The clarity for your publish is simply spectacular
and that i can suppose you’re an expert in this subject.
Fine with your permission let me to take hold of your
feed to keep updated with approaching post. Thank you one million and please
continue the gratifying work.
Vehicle Locksmith professional Services is accessible to help you in case you have shed vehicle tricks, need us to open up scampered vehicle, vehicle lockouts, or
wonderful issues altogether, you just won a brand new reader.
What could you recommend about your submit that you
made a few days ago? Any sure?
Keep on working, great job!
Nice site. Your blogs are very interesting and I will tell my
Hello, i believe that i noticed you visited my site
so i got here to go back the prefer?.I am attempting to to find things
to improve my site!I guess its adequate to make use of a few of your concepts!!
This is my very first time to visit here. I discovered a variety of enjoyable stuff as part
of your blog, particularly its discourse.
From the tons of comments on the articles, I suppose I am not the only one having most
of the enjoyment! Keep up the favorable job.
Very well written information. It will be beneficial to anyone who uses it, like me.
Keep doing what you’re doing – for sure I will check out more posts.
As a Newbie, I am always checking out online for articles that may be of assistance to me.
And yours is undoubtedly one. Thank you.
Good post. Didn’t know this, thanks for letting me know.
Greetings I am so delighted I find your site, I actually found you by mistake, while I was searching on search engines for something else, Anyways I’m here now and
could just like to say many thanks for a tremendous post as well as entertaining site.
Please do continue the truly great work.
Simply a smiling visitor here to share the love. btw great style and design and outstanding post.
I appreciate this post, I am a huge fan of this site and I would certainly
want to kept updated.
I’m thankful to obtain a call from a friend as he identified the important suggestions shared on your website.
Browsing your blog post is a real outstanding experience.
Many thanks for considering readers like me, and I wish you the very best.
Excellent article, thanks and we want more! Added you to FeedBurner.
You must take part in a contest for amongst the
very best blogs on the net. I will suggest this web site!
Exceptional entry! I found it very worthwhile.
I’ll come back later to see if perhaps more posts are added.
Just desire to say your article is as astonishing.
The clearness in your post is just great and i can assume you’re an expert on this subject.
Well with your permission allow me to grab your feed to keep
updated with forthcoming post. Thanks a million and please continue the enjoyable
I am genuinely grateful to the owner of this website who has
shared this wonderful post at at this time.
I am no longer sure where you’re getting your info, but great topic.
I must spend some time studying much more or working out more.
Thanks for magnificent info I used to be in search of this
information for my mission.
The info which I am posting is based on my experience and studies combined. The data provided are true and verified.
If any queries, you can post it in comment. I will try to resolve that.
My coder is trying to convince me to move to .net from PHP.
I have always disliked the idea because of the costs.
But he’s tryiong none the less. I’ve been using Movable-type on a variety of websites for about a
year and am anxious about switching to another
platform. I have heard very good things about blogengine.net.
Is there a way I can transfer all my wordpress posts into it?
Any kind of help would be greatly appreciated!
I am not positive the place you’re getting your information, however good topic.
I must spend some time finding out more or understanding more.
Thank you for wonderful information I used to be on the lookout for this
info for my mission.
I came across your website last week and started to follow your site content consistently.
I haven’t left a comment on any kind of blog site just yet but
I was considering to start soon. It’s definitely exciting to really contribute to
an article even if it’s only a blog. I really liked going through
several your posts. Excellent articles of course. I will keep visiting your blog frequently.
I learned lots from you. Thanks!
Thank you for this fantastic post, I am glad I found this website on yahoo.
I do trust all of the ideas you’ve shown in your post.
They’re actually convincing and can certainly
work. Thank you for the post.
I don’t have any idea how I ended up here, however I thought
this post was good. I do not know who you are but definitely you’re going to a
well known blogger if you aren’t already
Pretty! This has been an incredibly wonderful article.
Thank you for providing this information.
you’re in point of fact a just right webmaster. The website loading pace is
amazing. It sort of feels that you’re doing any unique trick.
Furthermore, The contents are masterpiece. you’ve done a wonderful
task on this matter!
Thanks a lot for the blog article.Really thank you! Great.
Thank you for your post.Really looking forward to read more. Will read on…
Hello there! I could have sworn I’ve been to this site before but after browsing through many of the articles I realized it’s new to me.
Anyhow, I’m definitely delighted I found it and I’ll be bookmarking it and checking back regularly!
Fantastic blog you have here but I was curious if you knew of any forums that cover the same topics talked
about here? I’d really love to be a part of online community where I can get suggestions from other
knowledgeable individuals that share the same interest. If you have any suggestions, please let me
know. Thanks a lot!
With havin so much content do you ever run into any issues of plagorism or copyright infringement?
My site has a lot of unique content I’ve either written myself or outsourced but it seems a lot of it is popping
it up all over the web without my permission.
Do you know any solutions to help prevent content from being ripped off?
I’d truly appreciate it.
Greɑt article, exactly what I was looking for.
What’s up, I check your blog regularly. Yoour writing
style is awesome, keep doing what you’re doing!
An impressive share! I have just forwarded this onto a
friend who has been conducting a little research on this.
And he in fact ordered me breakfast due to
the fact that I discovered it for him… lol. So allow me to reword this….
Thank YOU for the meal!! But yeah, thanks for spending
some time to discuss this matter here on your site.
I could not refrain from commenting. Perfectly written!
Do you mind if I quote a few of your posts as long as I provide credit and sources back to your site?
My website is in the very same niche as yours and my users would definitely benefit from a lot of the information you present here.
Please let me know if this ok with you. Thanks a lot!
Thats fine brother. As long as you add the credits of this website, its fine to me. Go ahead.
Hey there just wanted to give you a brief heads up and
let you know a few of the pictures aren’t loading
properly. I’m not sure why but I think its a linking
issue. I’ve tried it in two different web browsers and both show the same results.
It’s amazing to go to see this web page and reading the views of all mates on the topic of this paragraph, while I am also
keen of getting knowledge.
What would happen to a gyroscope that only had freedom to move parallel to earth’s surface? That is, if it was restricted from tilting and could only drift? You would not, I think, see only the drift component: you induce a kind of precession when you force the axis of a gyroscope to change its pitch or yaw. So the forced movement of the disk outside of its inertial path will induce a change in the apparent drift. Can you characterize that movement?
Bob, Can you elaborate your question a bit more. A gyroscope settles at the meridian only when it has three degrees of freedom. That’s the basic concept and fundamental rule. And in another words, it is this three degrees of freedom which make it a Gyroscope. So, its quite obvious that if you restrict its any one degree of freedom, it will not settle at the meridian. If you are not satisfied with the answer then get back to me.
Your post is very good, I am very impressed to read your post, thank you very much
Your post is very good, I am very impressed to read your post, thank you very much