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How Do Light Bulbs Work? | Earth Lab

290,061 views

BBC Earth Lab

Video Language:

  • English

Caption Language:

  • {{captionLanguage | language_name}} ({{captionLanguage}})

Accent:

  • English (UK)

Speech Time:

94%
  • 4:03 / 4:17

Speech Rate:

  • 166 wpm - Fast

Category:

  • Entertainment

Tags :

Intro:

Video Vocabulary

pioneers

/ˌpīəˈnir/

noun other verb

first person to explore new territory. People exploring new places or fields of endeavor. develop or invent something new.

minutes

/ˈminit/

noun other

sixty seconds. Notes taken at meetings to record what was said.

usually

/ˈyo͞oZH(o͞o)əlē/

adverb

under normal conditions.

chemical

/ˈkemək(ə)l/

adjective noun

relating to chemistry. Basic substance produced by mixing elements.

through

/THro͞o/

adjective adverb preposition

From one end or side of something to the other. expressing movement into one side and out of other side of opening etc.. Over, in, across an entire thing or place.

mechanically

/məˈkanək(ə)lē/

adjective adverb

In a machine-like manner; without feeling. By or like the use of machines; automatically.

photons

/ˈfōtän/

noun other

particle representing quantum of light or other electromagnetic radiation. Quantum of electromagnetic radiation.

glowing

/ˈɡlōiNG/

adjective verb

expressing great praise. To emit a steady even light.

reaction

/rēˈakSH(ə)n/

noun

action performed or feeling experienced in response to situation or event.

electricity

/əˌlekˈtrisədē/

noun

Energy generated positive and negative charges.

melting

/ˈmeltiNG/

adjective noun verb

becoming liquefied by heat. action of liquefying. To disappear or to go away.

electrical

/əˈlektrək(ə)l/

adjective

concerned with or producing electricity.

realise

/ˈrē(ə)ˌlīz/

verb

become fully aware of something as fact.

changed

/CHānj/

verb

To replace something with another thing.

although

/ôlˈT͟Hō/

conjunction

Despite the fact that; however.

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