Канал: Denis YW Yu

What is special about this Escher picture?

What is special about this Escher picture?

How many balls are in the container?

How many balls are in the container?

Smart windows on airplanes

Smart windows on airplanes

Why is the sky blue? And why is the sun reddish at sunset?

Why is the sky blue? And why is the sun reddish at sunset?

The Mysterious Can

The Mysterious Can

How much thermal insulation (R-value) is a material?

How much thermal insulation (R-value) is a material?

Can you tell the difference between sunrise and sunset?

Can you tell the difference between sunrise and sunset?

How hot is a dolsot bibimbap?

How hot is a dolsot bibimbap?

What is the energy efficiency of a gas stove and what are the losses?

What is the energy efficiency of a gas stove and what are the losses?

Convection - how much heat is carried away?

Convection - how much heat is carried away?

Maillard Reaction

Maillard Reaction

DIY watermill

DIY watermill

Reducing radiation with shiny surface

Reducing radiation with shiny surface

How does a dehumidifier work?

How does a dehumidifier work?

Understanding psychrometric chart - advanced

Understanding psychrometric chart - advanced

Understanding psychrometric chart - beginner

Understanding psychrometric chart - beginner

Measuring humidity with a sling hygrometer

Measuring humidity with a sling hygrometer

Skin effect and proximity effect - how they change resistance of wires

Skin effect and proximity effect - how they change resistance of wires

Body Fat and Electrical Resistance

Body Fat and Electrical Resistance

Reactions of candles

Reactions of candles

Is your hand sanitizer at risk of fire?

Is your hand sanitizer at risk of fire?

Wireless charging, induction and transformers

Wireless charging, induction and transformers

Zones Of Combustion of a Candle

Zones Of Combustion of a Candle

Science of cooking

Science of cooking

Holding fire without burning yourself

Holding fire without burning yourself

Understanding inductor and inductance with demonstrations

Understanding inductor and inductance with demonstrations

What is soot?

What is soot?

What is combustion, and how it affects society

What is combustion, and how it affects society

The Science of Fireworks

The Science of Fireworks

What online lectures were like during COVID-19

What online lectures were like during COVID-19

Steam Engine Demonstration

Steam Engine Demonstration

How hot is fire?

How hot is fire?

Dual-ion battery - a battery that can be charged within minutes

Dual-ion battery - a battery that can be charged within minutes

Ultrasonic humidifier - How does it work?

Ultrasonic humidifier - How does it work?

Harmonics in Power Supply

Harmonics in Power Supply

Explaining overtone singing and changes in harmonics

Explaining overtone singing and changes in harmonics

How to visualize sound wave and harmonics?

How to visualize sound wave and harmonics?

What is a smart window?

What is a smart window?

HK tram ride - A trip on one of the oldest transportation systems in Hong Kong

HK tram ride - A trip on one of the oldest transportation systems in Hong Kong

IR video with food and cooking - is heat conducted faster through meat or fat?

IR video with food and cooking - is heat conducted faster through meat or fat?

Sunrise and sunset with infrared camera

Sunrise and sunset with infrared camera

Tips to keep room warmer in winter without using too much energy

Tips to keep room warmer in winter without using too much energy

5 tips to extend your cell phone battery life

5 tips to extend your cell phone battery life

Episode III: Return of the pinecone - DIY pinecone

Episode III: Return of the pinecone - DIY pinecone

Episode II: Secret of the pinecone - why pinecone shrinks in water

Episode II: Secret of the pinecone - why pinecone shrinks in water

Seeing how things heat up (and cool down) in our life with IR camera

Seeing how things heat up (and cool down) in our life with IR camera

Episode I: What happens to a pinecone in water? (Christmas special)

Episode I: What happens to a pinecone in water? (Christmas special)

How our phone controls our happiness

How our phone controls our happiness

Solar Tracking Project

Solar Tracking Project

Improving work efficiency

Improving work efficiency

Enantiomerism: Inversion of HCFClBr

Enantiomerism: Inversion of HCFClBr

How to make a face-centered cubic structure?

How to make a face-centered cubic structure?

The Story of Urban Heat Island Effect

The Story of Urban Heat Island Effect

Heat and the City

Heat and the City

The breakfast experience with infrared camera

The breakfast experience with infrared camera

What can you do with a cup of ice?

What can you do with a cup of ice?

Energy Challenge - quiz about energy

Energy Challenge - quiz about energy

Secrets about heat pipe

Secrets about heat pipe

How will the world look like if we can see temperature?

How will the world look like if we can see temperature?

Science in the CarPark - What can we learn from an IR video in a car park?

Science in the CarPark - What can we learn from an IR video in a car park?

Infrared video during lunch time

Infrared video during lunch time

How can you tell if an air-conditioner is on or off by looking at it?

How can you tell if an air-conditioner is on or off by looking at it?

Infrared video with different materials

Infrared video with different materials