There is no "white stuff" in a silencer/muffler, unless you mean fiberglass packing. It has no use when removed.
The white stuff inside your kettle is likely limescale, which is a mineral deposit that forms when water with high mineral content is heated. This is a common occurrence in kettles and can be removed by descaling the kettle regularly.
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The stalks are green at top and still white at base.
xylemPhloem
The white stuff inside an apple is called the apple core, which consists of the seeds and fibrous material. It is safe to eat, but the seeds contain a small amount of cyanide, so it is best to avoid eating them in large quantities.
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When celery is hollow inside, it is usually due to a lack of consistent watering during growth. This can cause the cells in the celery to expand unevenly, resulting in hollow stalks.
The white stuff that is put on windows during renovations is a window cleaner spray, such as Bon Ami or Windolene. This is applied to the windows so that nobody can see inside.
NBA Inside Stuff - 1990 Inside Stuff Goes Hollywood was released on: USA: 27 February 2005
The white stuff inside your tea kettle is likely mineral deposits, also known as limescale. This occurs when minerals in the water, such as calcium and magnesium, build up over time as the water is heated and evaporates. Regular descaling of your kettle can help prevent this buildup.
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