How does obito uchiha disappear using his intagability while he can be seen?

Obito Uchiha's intangibility allows him to phase through solid objects, making him effectively invisible to physical attacks. While he can be seen, his ability to manipulate his body on a molecular level enables him to avoid harm by existing in a state that is not fully tangible. This means that, although he appears visible to the eye, he is not fully present in the physical realm, allowing him to evade attacks while still being observable.