虽然气场于无形，但它的影响确深远

Although "popularity" cannot be seen and cannot be touched, its effects are wide-ranging. 我觉得popularity应该翻译成“气场”更好，一般媒体形容某个明星都用气场一词

"popularity"means 流行度，名望，人气很高。So you are right.

"popularity" translate into Chinese has two different meanings:人气 和 流行 1) means 人气,ep: One horn to get her higher popularity. （someone） then sentence translation: 虽然“人气”看不见，摸不着，但它的影响很大(很广泛)。 2) means 流行,ep:Television has robbed the cinema of its former popularity.（something） then sentence translation: 虽然“流行”看不见，摸不着，但它的影响很大(很广泛)。 hmm..maybe the answer can help u .. Chinese is difficult to explain with my poor English . aha~

Sorry, I am afraid I don't understand your meaning even though I speak Chinese.