Mercy Compass Band

The compass is one of the four famous inventions in ancient China, which appeared in the Warring States Period and has a history of more than 2,000 years.

The original compass was made of natural magnet and resembled a spoon with a smooth bottom that could spin freely on a smooth copper or wooden "turf", and when it came to rest, the handle of the spoon pointed south. People call it "Sinan".

Around the beginning of the Northern Song Dynasty, the ancients in China created a new guide tool - guide fish. The guide fish is made of a thin piece of steel, shaped like a fish, and the belly of the fish is concave and floats on the surface of the water like a boat. In the Song Dynasty, there were also guide fish and guide turtles made of wood.

The wooden guide fish is carved from a wooden block, and a natural magnet with strong magnetism is placed in the belly of the fish, sealed with wax, and a needle is inserted into the mouth of the fish, and the fish can be guided. The method and principle of the guide turtle are basically the same as those of the wooden guide fish.

Shen Kuo recorded in "Mengxi Writings" that the compass compass "is often slightly easterly, not all southern". Shen Kuo discovered for the first time that although the magnetic needle was facing south, it did not mean due south, but slightly easterly.

This is the phenomenon of magnetic declination, which arises because the magnetic poles of the earth do not coincide with the north and south poles of the geography, and there is a slight deviation. This discovery was a remarkable event at the time. In the West, it was not until 1492 A.D. when Columbus crossed the Atlantic Ocean that a magnetic declination was discovered, more than 400 years later than Shen Kuo in China.

According to historical records, Zhang Heng of the Eastern Han Dynasty invented a guide car. The guide car is equipped with very complex and ingenious machinery. It's ** is a big flat wheel, the wooden man is erected on it, on both sides of the big flat wheel, there are also a lot of small gears, if the car turns left, the right wheel will drive the small gear, and the small gear will drive the big flat wheel, so that the big flat wheel turns to the right on the contrary.

As a result, the wooden man's arm is always pointing south.

Resources.

I don't think it's the Compass.

That song of mercy is by the band Heaven.

There is also a song called Mercy Cool Me ** box recently released by Zheng Jun, and the cool dog ** box is also available, or it is on Thunder:

Page song Dou Wei Black Panther style.

Hard rock. gotthard

If you want to be exactly the same, there will definitely be none

I think his "Black Dream" is so good.

Lynyrd Skynyrd Free Birdnirvana.

Scorpions' Send Me An Angel prelude is particularly good, and Iron Maiden's Can I Play with Madness

White Lion's When The Children Cry and Led Zeppelin, but none of these songs seem to be particularly hard, Dou Wei and their Compass Band in the later period are good, their compassion is great, and the Black Panther was afraid that you would shed tears for yourself at that time.

The 80's European and American hard rock, heavy metal can all be in the same style, and there are too many songs to recommend to you: AC DC, Iron Maiden (Iron Maiden), Whitesnake (early with blues style).

poison ,ted nugent ,queensrÿche, dio ,quiet riot, guns 'n' roses

judas priest

"Dou Wei period"? You're probably referring to Chinese rock 10 years ago, right? Main**:

Black Panther: Black Panther.

Cui Jian: Rock on the road of the New Long March, eggs under the red flag.

Tang Dynasty: Tang Dynasty.

You're looking at a lonely landscape.

Those years, the year in a hurry, to youth.

Go to search DJ Dan Collection Series - BMW sad and good car**.

Chinese: Find a word instead of (Tai Zhengxiao), Lover's Bridge, Kangding Love Song, the girl of Bilan Village, the girl of Alishan (Zhuo Yiting).

Cantonese: I just want to walk with you for the rest of my life (Jacky Cheung), meet in the rain (dawn) of the disco: Shake (Sammi Cheng), two in one, all-day love (dawn), this class (Chen Huilin) English:

Recreate memories, everyone will, traces, serious snow, smiles outside Suzhou, little stars, wry smiles, playing the piano to pigs, objective can't, don't break up love.