 
 <prompt> How imperfect vacuum dey different from true vacuum? Given di last question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: Vacuum na space wey no get any mata inside. The word come from Latin word vacuus wey mean "empty" or "void". An example of vacuum na place wey gaseous pressure dey way less pass atmospheric pressure. Physicists dey always talk about ideal test results wey fit happen for perfect vacuum, wey dem sometimes just call "vacuum" or free space, and dem dey use term partial vacuum to refer to imperfect vacuum like the one wey fit dey for lab or for space. For engineering and applied physics, vacuum mean any space wey pressure dey lower pass atmospheric pressure. Latin term in vacuo dey used to describe object wey dey inside wetin suppose be vacuum. 