What mathematical equivalent could he suggest as the value of a Branly coherer?

他可以提出什么数学等价物作为 Branly coherer 的价值？

Before this historical chasm, a mind like that of Adams felt itself helpless; he turned from the Virgin to the Dynamo as though he were a Branly coherer.

面对这个历史鸿沟，像亚当斯这样的头脑感到无助；他从 Virgin 转向 Dynamo，就好像他是 Branly coherer 一样。