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Phát minh của La bàn, La bàn như thế nào?

Bất cứ nơi nào chúng tôi có trên thế giới, chúng tôi có thể luôn luôn tìm cách của chúng tôi thông qua la bàn một cách rất dễ dàng. Thậm chí nếu chúng tôi đã ở giữađại dương, nó sẽ đưa chúng tôi một vài giây để tìm cách của chúng tôi thông qua các thiết bị đơn giản này. Ngày nay la bàn luôn luôn là cách dễ nhất mặc dù có rất tinh vi thiết bị như vệ tinh GPS. La bàn có một mũi tên từ đó là cân bằng và được đặttrên đỉnh của kim vì vậy mà nó có thể di chuyển gần như không có ma sát. Mũi tênnày, nhờ từ tính trên trái đất Bắc từ trường (từ trường Bắc), luôn luôn hiển thị ở phía bắc.

 

Chúng tôi có thể nghĩ rằng trên thế giới như một nam châm lớn. Từ trường của thế giới là hướng đến một thứ tự nhất định trong quá trình hình thành và cho thấy mộtđặc trưng của nam châm. Theo đó, Bắc cực là đạo diễn như S. Nam cực đạo diễn tạiN. Chữ cái N và S được sử dụng trong Nam châm cũng được cảm hứng của Bắc vàNam cực.

 

La bàn được đánh dấu là N, về phía bắc của mũi tên, và phía bắc của La bàn rút ramiền bắc trên thế giới từ các nguyên tắc khác nhau cực kéo nhau. Để cảm thấy điều này đã bắn vào bề mặt của thế giới với đường kính 8000 dặm, mũi tên La bàn là cựcnhẹ và không phải là ma sát miễn phí. Nếu không, nó sẽ không thể điều hướng bởitừ trường.

 

Dọc theo trục toàn bộ thế giới, La bàn không hoạt động với độ chính xác 100%, một số khu vực có deviating. Những khu vực này và bao nhiêu độ lệch sẽ được hiển thịtrong bản đồ chi tiết.

 

Xem xét một khi sử dụng la bàn là sự vắng mặt của vật kim loại có thể được sử dụng để tạo ra từ trường xung quanh nó. Nếu từ trường xung quanh thành phố La bàncó một đối tượng mà là nhiều hơn so với bề mặt của trái đất, mũi tên La bàn hướngđối tượng. Điều này cũng có nghĩa là bị lỗi đo lường.

 

Lịch sử

Trung Quốc phát minh ra la bàn năm 100 sau công nguyên. Việc phát hiện ra la bànđã diễn ra từ nguyên tắc rằng một đối tượng tự do sẽ được đứng đầu phía bắc trong một môi trường điện từ.

 

Tại Pháp, La bàn đầu tiên được đề cập trong 1200. Nó được tiếp nối bởi Iceland năm 1207, Anh và 1213. La bàn có một cấu trúc nguyên thủy. Sự phát triển đáng kể đầu tiên là Pierre de Maricourt (1269). Sau khi ông đặt kim trong một thanh kim loại, ông trồng nó trong một hộp xếp loại và minh bạch.

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