======The Thought Chamber======
=====Location Information=====
  * **Type:** [[Chamber]] within the [[Department of Mysteries]]
  * **Location:** [[Department of Mysteries]], [[Ministry of Magic]], [[London]], [[England]]
  * **Owner/Residents:** [[Ministry of Magic]] ([[Unspeakable|Unspeakables]])
  * **Key Features:** A large crystal bell jar containing raw, living [[thought]].
=====Description and History=====
The Thought Chamber is one of the specialized rooms within the [[Ministry of Magic]]'s [[Department of Mysteries]], dedicated to the study of [[thought]]. It is a long, rectangular room, described as being completely bare aside from a table in its center. Doors are located at either end, connecting it to other chambers within the department.
The chamber's most significant and sole feature is a large, crystal bell jar that rests upon the central table. This bell jar is filled with a deep, turbulent, emerald-green liquid or substance. Floating and swimming within this substance are what [[Hermione Granger]] identifies as "thoughts"—described as pearly-white, billowy, and ethereal strands. The chamber exists for the purpose of examining [[thought]] as a tangible magical force, a concept far beyond conventional [[magic]] taught at [[Hogwarts]]. The history of the chamber is unrecorded, but it is presumably as old as the [[Department of Mysteries]] itself and has been used for secretive research by [[Unspeakable|Unspeakables]] for centuries.
=====Role in the Story=====
The Thought Chamber appears during the [[Battle of the Department of Mysteries]] in //Harry Potter and the Order of the Phoenix//. After escaping the [[Hall of Prophecy]], [[Harry Potter]] and his friends enter the Thought Chamber while being pursued by [[Death Eater|Death Eaters]].
During the ensuing duel, a [[Death Eater]] tackles [[Ron Weasley]], and in the struggle, the [[Death Eater]]'s head and shoulders are accidentally plunged into the bell jar of thoughts. The effect is immediate and bizarre: his head shrinks to the size of a baby's, and he begins to speak in nonsensical gurgles. This demonstrates the immense and dangerous power of raw, unfiltered [[thought]] when physically interacted with. The event serves as a stark illustration of why the work of the [[Department of Mysteries]] is kept secret, as the forces being studied are profoundly powerful and poorly understood.
Shortly after this incident, the students flee through the opposite door, finding themselves in the [[Time Room]]. The brief but memorable encounter in the Thought Chamber highlights the abstract and perilous nature of the [[magic]] being researched by the [[Ministry of Magic]].
=====Behind the Scenes=====
  * (Film): In the cinematic adaptation of //Harry Potter and the Order of the Phoenix//, the sequence of rooms within the [[Department of Mysteries]] is significantly condensed. The Thought Chamber and the specific events that take place within it are omitted from the film. The confrontation between [[Dumbledore's Army]] and the [[Death Eater|Death Eaters]] is primarily confined to the [[Hall of Prophecy]] and the [[Death Chamber]].