The 139th meridian west is a line of longitude that is 139 degrees west of the Prime Meridian, which passes through Greenwich, England. This meridian runs from the North Pole to the South Pole and crosses various land and water areas. In the northern hemisphere, the 139th meridian west passes through parts of Canada, including some areas of British Columbia and the Yukon Territory. In the southern hemisphere, it crosses through the Pacific Ocean and then reaches parts of Antarctica.
The 141st meridian east is a line of longitude that is 141 degrees east of the Prime Meridian, which is situated at 0 degrees longitude. This meridian runs from the North Pole to the South Pole, passing through various countries and regions. In the Northern Hemisphere, the 141st meridian east crosses through parts of Russia, the Pacific Ocean, and some islands, including those of Japan. In the Southern Hemisphere, it primarily runs through the ocean.
The 143rd meridian west is a line of longitude located 143 degrees west of the Prime Meridian, which is at 0 degrees longitude. Longitude lines run from the North Pole to the South Pole. The 143rd meridian west passes through the Pacific Ocean and is east of Alaska and west of the international date line, which is generally around 180 degrees longitude. Geographically, this meridian crosses several regions, including parts of Alaska and the Pacific waters.
The 147th meridian east is a line of longitude located 147 degrees east of the Prime Meridian, which runs through Greenwich, England. This meridian runs from the North Pole to the South Pole and passes through various countries and territories in the eastern hemisphere.
The 148th meridian west is a line of longitude located 148 degrees west of the Prime Meridian, which is the line of longitude designated as 0 degrees. This meridian runs from the North Pole to the South Pole, passing through various territories and regions, primarily in the northern hemisphere. In the northern part, the 148th meridian west crosses through parts of the United States, specifically Alaska. In the southern hemisphere, it primarily traverses the Pacific Ocean.
The 150th meridian west is a line of longitude that is 150 degrees west of the Prime Meridian, which is located at 0 degrees longitude. This meridian runs from the North Pole to the South Pole and divides the Earth into the Eastern and Western Hemispheres.
The 153rd meridian east is a line of longitude that is located 153 degrees east of the Prime Meridian, which is defined as 0 degrees longitude. Meridians run from the North Pole to the South Pole and are used to specify locations on the Earth's surface in combination with lines of latitude. The 153rd meridian east passes through several regions and countries, including parts of the Pacific Ocean and the eastern coast of Australia.
The 16th meridian east is a line of longitude that is located 16 degrees east of the Prime Meridian, which is designated as 0 degrees longitude. It runs from the North Pole to the South Pole and passes through several countries in Europe and Africa. In Europe, the 16th meridian east passes through countries including Norway (in the northern part), Sweden, Denmark, Germany, and Austria.
The 170th meridian east is a longitudinal line that is 170 degrees east of the Prime Meridian, which is located at 0 degrees longitude. This meridian runs from the North Pole to the South Pole and passes through several regions, including parts of the Pacific Ocean and some islands. Notably, the 170th meridian east lies just west of the International Date Line, which is at approximately 180 degrees longitude.
The 173rd meridian west is a line of longitude located 173 degrees west of the Prime Meridian, which is defined as 0 degrees longitude. This meridian runs from the North Pole to the South Pole and is primarily located in the Pacific Ocean. It passes to the east of the International Date Line, where it is relevant for navigation and timekeeping.
The 31st meridian west is a line of longitude that is 31 degrees west of the Prime Meridian, which runs through Greenwich, London. It is an imaginary vertical line that extends from the North Pole to the South Pole. Geographically, this meridian passes through several countries in Africa, including parts of Algeria, Libya, and more. It is often used in various geographic, navigational, and mapping contexts to define locations and boundaries.
The 33rd meridian west is a line of longitude that is 33 degrees west of the Prime Meridian, which is located at 0 degrees longitude. This meridian runs from the North Pole to the South Pole, passing through various geographic regions.
The 37th meridian west of Washington, D.C., is a line of longitude that runs through North America and other regions of the world. Specifically, it is located 37 degrees west of the Prime Meridian, which is at 0 degrees longitude. In the context of the United States, the 37th meridian west of Washington, D.C., would pass through several states as it travels north and south.
The 39th meridian east is a line of longitude that is 39 degrees east of the prime meridian, which is located at 0 degrees longitude. It runs from the North Pole to the South Pole and passes through several countries, including parts of Russia, Ukraine, Romania, and various countries in East Africa. Meridians are used in geographic coordinate systems to specify locations on the Earth's surface in conjunction with lines of latitude.
The 43rd meridian east is a line of longitude that is 43 degrees east of the Prime Meridian. It runs from the North Pole to the South Pole and passes through several countries and regions. In the northern hemisphere, the 43rd meridian east passes through parts of Eastern Europe and Russia. Specifically, it traverses countries such as Ukraine, Belarus, and some regions of Russia.
The 46th meridian east is a line of longitude that is 46 degrees east of the Prime Meridian. It runs from the North Pole to the South Pole, passing through several countries and regions along its path. Key areas that the 46th meridian east passes through include: - In Europe, it passes through parts of Russia. - In Asia, it continues through countries such as Kazakhstan and Mongolia.
The 47th meridian east is a line of longitude that is 47 degrees east of the Prime Meridian, which is located at 0 degrees longitude. This meridian runs from the North Pole to the South Pole, passing through several countries. In the northern hemisphere, it traverses regions in countries such as Russia, and in the southern hemisphere, it passes through countries including Kazakhstan and may also touch parts of the Indian Ocean.
The 49th meridian west is a line of longitude that is located 49 degrees west of the Prime Meridian, which is the reference line for 0 degrees longitude. This meridian runs from the North Pole to the South Pole, passing through various countries and regions. In North America, the 49th meridian west serves as a significant boundary between the United States and Canada in several areas.
The 53rd meridian east is a line of longitude that is 53 degrees east of the Prime Meridian, which is located at 0 degrees longitude and runs through Greenwich, England. Meridians are used in geographic coordinate systems to specify locations on the Earth's surface. The 53rd meridian east passes through several countries as it runs from the North Pole to the South Pole. Starting from the north, it crosses parts of Russia, Kazakhstan, and eventually reaches the Arabian Peninsula.
The 56th meridian west is a line of longitude located 56 degrees west of the Prime Meridian, which runs through Greenwich, England. It runs from the North Pole to the South Pole and passes through various regions. In North America, it crosses through parts of Canada, and in South America, it passes through countries like Brazil and Argentina. The 56th meridian west is often used in geographical contexts to denote specific locations or areas that can be identified based on their longitudinal position.

Pinned article: ourbigbook/introduction-to-the-ourbigbook-project

Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
We have two killer features:
  1. topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculus
    Articles of different users are sorted by upvote within each article page. This feature is a bit like:
    • a Wikipedia where each user can have their own version of each article
    • a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
    This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
    Figure 1.
    Screenshot of the "Derivative" topic page
    . View it live at: ourbigbook.com/go/topic/derivative
  2. local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:
    This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
    Figure 5. . You can also edit articles on the Web editor without installing anything locally.
    Video 3.
    Edit locally and publish demo
    . Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.
  3. https://raw.githubusercontent.com/ourbigbook/ourbigbook-media/master/feature/x/hilbert-space-arrow.png
  4. Infinitely deep tables of contents:
    Figure 6.
    Dynamic article tree with infinitely deep table of contents
    .
    Descendant pages can also show up as toplevel e.g.: ourbigbook.com/cirosantilli/chordate-subclade
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact