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.
Your body requires a number of essential minerals to maintain your health, and eating a banana provides your body with several of these nutrients. Bananas contain small amounts of iron, calcium, magnesium, zinc, phosphorus, manganese, copper, selenium and fluoride. In addition, bananas provide a significant source of potassium, a mineral required for proper nerve and muscle functioning.