Where does this definition of contact force come from?
This entry for contact force is sourced from Main Dictionary, one of the dictionaries and corpora merged into Lughet.
Does contact force appear elsewhere on Lughet?
Yes — contact force appears under other sources or language pairs in Lughet's collection. See the list below.
What is Lughet?
Lughet is a free trilingual dictionary covering nearly five million entries across Uyghur, Chinese, and English, drawn from more than ten source dictionaries and corpora.