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The top of the water.
A meniscus, but whether it has a positive curve or a negative one depends on whether it wets the glass.
nawt
water surface meniscus or knee cartilage meniscus?
The meniscus - the upward curve of a liquid in a narrow vessel.Read more: When_water_is_ina_container_the_surface_of_the_water_is_curved_this_curve_is_called
The meniscus - the upward curve of a liquid in a narrow vessel.
Read more: When_water_is_ina_container_the_surface_of_the_water_is_curved_this_curve_is_called