Boiling experiments using an electric glass kettle: Boiling 1.7L water
few small bubbles appear,
since the water temperature is low, and the heat supplied could vaporise a tiny amount of water.
More small bubbles stay in water, and water becomes blurry, since the water temperature is increased,
the water temperature is higher, the heat could vaporise more water, thus bubbles become larger and more,
water becomes more and more clear...
water boiled @ 4'43", the water temperature is 100 deg, the heat is all for vaporisation.
Kettle switch jumped off @ 4'57", taking 14 seconds to jump
Water settled again (@5'15"), taking 18 seconds to settle
Boiling 1.0L water now...
Water boiling @ 2'48" (it is proportional to the time if we calculate it from the previous water boiling time for 1.7L)
Kettle switch jumped off @3'02", taking 14 second to jump
Boiling water (more than 90% full of the whole kettle), it is much more than suggested (1.7L).
It is dangerous! Please do not do this unless you are advised/supervised or you have correct safety measures.
Please follow the instruction when using a kettle to boil water. too much water may cause electric shock and damages to the kettle!!!
water is blurry because of small bubbles
water is becoming clear...
water is boiled @7'10" (this kettle is quite well designed, and it only splits a tiny amount of water when boiling).
a large anti-clockwise circulation can be clearly seen.
using the boiling time, we can deduce the amount of water: ~2.5L
water settled.
