In this video we explore what is inside a hairdryer, how it is made, and how it works. Created by Karl Wendt.

Watch the next lesson: https://www.khanacademy.org/science/electrical-engineering/reverse-engin/hair-dryer/v/compare-motors?utm_source=YT&utm_medium=Desc&utm_campaign=electricalengineering

Missed the previous lesson? https://www.khanacademy.org/science/electrical-engineering/reverse-engin/hair-dryer/v/what-is-inside-a-hairdryer-1-of-2?utm_source=YT&utm_medium=Desc&utm_campaign=electricalengineering

Electrical engineering on Khan Academy: A summary of the math and science preparation that will help you have the best experience with electrical engineering taught on Khan Academy. Become familiar with engineering numbers and notation, and learn about the two most important electrical quantities: current and voltage.

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Pebbles present How Devices Work in 3D Animation. How Stuff Works with 3D Animation and Excellent Voice Over.

How Stuff Works, How Devices Work Video Series Covers the Following Topics :

How Do Cell Phones Work
How Does a Camera Work
How Do Flush Toilet Work
How Does a Light Bulb Work
How Does a Microwave Oven Work
How Does a Telescope Work
How Does a Washing Machine Work
How Does an Air Conditioner Work
How do ATM’s Work
How do Compact Discs CD’s Work
How do Elevators Work
How do Fire Extinguishers Work
How do Hearing Aids Work
How do Lasers Work
How do Metal Detectors Work
How do Night Vision Devices Work
How do Photo Copiers Work
How do Solar Cells Work
How does a Ball Point Pen Work
How does a Battery Work
How does a Bicycle Work
How does a Clock Work
How does a Coffee Maker Work
How does a Hair Dryer Work
How does a Helicopter Work
How does a Hot Air Balloon Work
How does a Jackhammer Work
How does a Light Stick Glow
How does a Loud Speaker Work
How does a Piano Work
How does a Radar Work
How does a Stethoscope Work
How does a Telephone Work
How does a Television Work
How does a Thermometer Work
How does a Type Writer Work
How does a Water Heater Work
How does a Wind Turbine Work
How does an Escalator Work
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How does GPS Work
How does Internet Work
How does Optical Fiber Work
How does Satellite TV Work
How Locks Work
How Does a Refrigerator Work

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How does a Hair Dryer Work?
An Hair Dryer consists of a motor-driven fan and a heating element. Hair Dryers transform electric energy into convective heat.
When current starts flowing through the Hair Dryer it is first supplied to the heating element. It is then used to make the electric motor spin, which in turn makes the fan spin. Now the airflow which is generated by the fan is sent over the heating element. The heating element warms the air by forced convection. The hot air finally blows out of the Hair Dryer.
This hot hair speeds up the evaporation of water from our hair’s surface by increasing the temperature of air surrounding each strand of our hair. This is how a Hair Dryer works.

Reference:
https://home.howstuffworks.com/hair-dryer.htm

Timecodes
0:00 – How does a Hair Dryer Work?
1:12 – Why don’t we feel pain when we cut our hair?
2:03 – Why do we get white hair?
3:05 – What if we Stop Washing our Hair?
4:06 – What if our Hair Disappeared?
5:17 – What if Hair Color Disappeared?
6:04 – How do nails grow?
6:59 – Why do we bite our nails?
7:55 – What if our Nails Disappeared?
9:03 – Why do people grind their teeth?
Video Rating: / 5

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