Column: What is "IH Cooker"?

"IH Cooker" is attracting the attention of people.
It enables to cook without "Fire", to say nothing of a "Gas".

How?

IH stands for "Induction Heating".
You must have studied in electromagnetism.
Induction is the process,
that the Primary Coil (The cooker) "inducts" electricity to the Secondary Coil (The pots and pans).
The pots and pans must be made of Steel or Stainless Steel, which produces heat from resistance in it.
Thus, Aluminum can't be use, since its resistance is not enough to produce sufficient amount of heat.

Okay, scientific explanation is enough.

What are the merits of using IH Cooker?

1. Strong heating power : can be cooked in about 30% shorter time than Gas cooker.
2. High thermal efficiency : reaches 90%. (Gas cooker is only up to 55%.) Also, residual heat remains as 1/5 of Gas cooker.
3. Economical : about 20% cheaper than Gas cooker.
4. Safety : since it doesn't use actual "Fire", and doesn't heat non-metals directly, it is much more safe than Gas cooker.
5. Easy to maintain : since it is flat, spilled boiling overs are easily wiped.
6. Easy to cook : it conducts heat evenly, thus it doesn't need to mix or to stir during cooking.
7. Comfortable : it conducts less heat to the surroundings, thus it makes cooker more comfortable, especially during summer. It also enables to use electric fan or wind from aircon.

No wonder,
it attracts the attention of people.