How to Care for a Norfolk Pine. Despite its name, Norfolk Pines are houseplants, although in a frost-free climate it can grow outdoors quite well--up to 100â (30 M) tall.In the home size it is limited by the container; most Norfolk pines in the house get to 5â to 6â (1.52 to 1.82 M) tall if well grown.ow to Care for a Norfolk Pine. Despite its name, Norfolk Pines are houseplants, although in a frost-free climate it can grow outdoors quite well--up to 100â (30 M) tall.
Headset Microphone Windscreens (Microphone Covers) The headset microphone windscreen (also referred to as a microphone cover) protects the microphone from dirt and moisture. A microphone covered by a windscreen is protected and delivers better sound quality.
Microwave ovens are relatively simple electronic cooking appliances. The cooking chamber has a hole for the passage of microwaves, generated by a specialized vacuum tube. The mica waveguide cover is a selective filter that covers the hole in the cooking chamber. It allows microwaves to reach the food, while preventing food particles and moisture from entering the electronic components of the oven. A hole in the waveguide cover can cause a fire in the cooking chamber of the microwave.