Bumbling bank janitor Ernest P. Worrell is assigned to jury duty, and soon finds himself in trouble when he is covertly switched with a look-a-like...
The Office of Scientific Investigations tracks down the source of increased magnetism and radioactivity in Los Angeles, and discovers that a man-made...
A series of demonstrations that illustrate some of the scientific principles involved in magnetism.
ບໍ່ ຈຳ ກັດການເຂົ້າເຖິງຟຣີ, ຊອກຫາຫຍັງບໍ່ມີໂຄສະນາ, ຫົວລ້ານແລະເພີ່ມທຸກມື້, ທຸກແພລະຕະຟອມແລະຖືກປັບປຸງໃຫ້ສົມບູນແບບ, ທຸກບ່ອນແລະທຸກເວລາ
