Abstract: A telescopically adjustable structure capable of defining or measuring an arbitrary three-dimensional volume and having twelve telescopically adjustable telescopic units, capable of maintaining a change in telescopic length and eight corner connection units for assembling the telescopic rods into a three-dimensional structure. A method of assembly may have the telescopic units adjusted to specified length prior to three-dimensional assembly or, alternately, the telescopic units may be assembled in collapsed telescopic form, and adjusted in assembled fashion. Particularly suited to provide a lightweight, low-cost, low-damage furniture or object double to check how the furniture volume might fit in a space or be transported to a space.

Abstract: This microphone includes a microphone element, speaker and antenna all internal to the microphone housing. These components are carried by a chassis that is fastened to the microphone body at its lower end which also provides the effective attachment point for the microphone cable. The speaker is mounted in the chassis at an angle having its face slight upwardly incline to project sound towards the top of the microphone. An antenna element includes walls on either side of the speaker for reflecting sound upwardly. The antenna element has apertures in its top portion to allow for the passage of sound therethrough. The microphone element is also in a position for picking up sound through the top of the microphone.

Abstract: Fission product iodine is removed from a waste gas stream and stored by passing the gas stream through a bed of silver-exchanged zeolite until the zeolite is loaded with iodine, passing dry hydrogen gas through the bed to remove the iodine and regenerate the bed, and passing the hydrogen stream containing the hydrogen iodide thus formed through a lead-exchanged zeolite which adsorbs the radioactive iodine from the gas stream and permanently storing the lead-exchanged zeolite loaded with radioactive iodine.