我叫γ——刀,你可能没听过我的名字吧?对了,我的家族很小,目前世界上只有30余位弟兄在极少数国家安家落户,我的故乡在遥远的瑞典。不久前,中国也有一位兄弟正式开始为大家服务。 你见过太阳灶吧！一面反光凹镜,将温暖的太阳光反射到一个点上。我们可以将太阳光看作无数根光线,反射到焦点以后,这个点的温度就是无数根光线温度 My name is γ - knife, you may not have heard of my name? Right, my family is very small, at present there are only more than 30 brothers settled in very few countries in the world, my hometown is far away in Sweden. Not long ago, a brother in China officially started to serve everyone. Have you seen the solar cooker! Reflective concave mirror, the warm sunlight reflected to a point. We can think of the sun as innumerable roots of light, after reflection to the focal point, the temperature at this point is the infinite temperature of light