class="oh__inner">&#10005;</span></button> </nav> <button class="menu-link oh unbutton underline"><span class="oh__inner">Menu</span></button> <h2 class="heading oh"><span class="oh__inner">We are <strong>Super.fluid</strong></span></h2> <p class="content-primary">Flowing without any loss of kinetic energy &mdash; stir us and we form vortices that continue to rotate indefinitely. </p> <p class="content-secondary">Not all Bose–Einstein condensates can be regarded as superfluids, and not all superfluids are