This is a science poster that tests if you have reached the 60-point level. Please self-test or turn out to black friends.
First, the heat radiation source
1, incandescent lamp
Principle of light: Did you hit the iron? Grilled over the skewer? Burned the induction cooker? Have you used the Yuba? It also glows when it is hot. Yes, the light that this buddy sends is "burned" by the current.
2, reflective incandescent bulbs
tips:
Reflective bulbs are divided into R and PAR types, R (Reflector) type is usually coated with inner wall, and PAR is full name is Parabolic Aluminised Reflector (parabolic aluminum reflector type). In addition, reflective bulbs are commonly found in AR and MR, Aluminium Reflector (Aluminum Reflector) and Multiface Reflector (Multifaceted Reflector).
3, tungsten halogen lamp
The principle of light: the tungsten halogen cycle, at a glance, no need to talk about it. You don't understand, trouble yourself to buy a tofu, thank you.
