¿Está vacío el vacío?

The video explores different perspectives on whether a glass is half full or empty, emphasizing that it is always full of air and gases. It discusses how temperature affects light emission, comparing it to heating metal. The concept of cooling to absolute zero is introduced, highlighting its theoretical impossibility. Finally, the nature of vacuum is examined, explaining that it is not truly empty but filled with low-energy states.

What is the perspective of the 'middle one' regarding the glass?

• The glass is empty.

• The glass is completely full.

• The glass is half full.

• The glass is half empty.

What happens to the light emitted by the glass as it is cooled?

• It becomes less energetic.

• It becomes more energetic.

• It remains the same.

• It disappears completely.

What is the lowest possible temperature called?

• Room temperature

• Absolute zero

• Freezing point

• Boiling point

Why is the vacuum not considered truly empty?

• It is a solid object.

• It is filled with air.

• It contains low-energy states.

• It is filled with water.

What does the term 'vacuum' refer to in modern physics?

• A completely empty space

• A space filled with air

• A space filled with water

• A space with the lowest energy state