Iron burns in oxygen, why is the wire coiled into a spiral? If the phenomenon of "Mars everywhere" is not found, what is the reason? How should the differences be improved?

Reduce heat loss.

The temperature is not enough and the oxygen is impure.

There are three ways of heat transfer: conduction, convection and radiation.

When the wire coil is spiral, the surface area per unit volume decreases, the effective radiation surface decreases, the air convection intensity decreases, and the heat is taken away slowly.

Which hospital in Zhengzhou sees bronchitis specialist?

Which exit is the Second Affiliated Hospital of Linjiangmen Heavy Medicine?

The Second Affiliated Hospital of Heavy Medicine is at Linjiangmen exit B 1. The Second Affiliated Hospital of Chongqi

How can the micro plastic surgery training center recruit 100 students?

Korea Yixing plastic

How much does Yancheng Jianhu's work-related injury cost if one finger is missing?

What are the exact words of the eyes that lack beauty? Who said that?

What are the characteristics of Japanese makeup? How to draw Japanese makeup better and more natural?

Family members of plastic death nurses refused to accompany them.

How to vaccinate puppies? How many shots do you need?

Does nose plastic surgery hurt?