Large Area Listening Systems. Large area listening systems are the most popular of all hearing enhancement devices, and are used in theaters, movie houses, auditoriums and houses of worship. There are three basic types: FM radio, infra-red (IR) light and a looped wire around the room, called an induction loop.
The strings are called Phloem Bundles (pronounced flom). They are part of the system that carries nutrition to all parts of the banana.
Bananas produce ethylene gas, a hormone that triggers ripening. Keep them in a paper bag to trap more of this gas near the fruit. 1  Avoid paper bags with a clay or waxy coating, which may absorb the ethylene.  A plastic bag blocks oxygen from reaching the fruit, which can sometimes lower the production of ethylene.