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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. Units of time equal to 60 seconds.

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. From the beginning of something until the end. moving in one side and out of other side of.

mechanically

/məˈkanək(ə)lē/

adjective adverb

In a machine-like manner; without feeling. by means of machine or machinery.

photons

/ˈfōtän/

noun other

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

glowing

/ˈɡlōiNG/

adjective verb

Looking very healthy and contented. To emit a steady even light.

reaction

/rēˈakSH(ə)n/

noun

Bodily response to a drug or something eaten.

electricity

/əˌlekˈtrisədē/

noun

form of energy resulting from existence of charged particles such as electrons or protons.

melting

/ˈmeltiNG/

adjective noun verb

becoming liquefied by heat. action of liquefying. To become liquid through heating.

electrical

/əˈlektrək(ə)l/

adjective

Related or connected to electricity.

realise

/ˈrē(ə)ˌlīz/

verb

To become aware of or understand mentally.

changed

/CHānj/

verb

To go from one train, bus, etc. and go to another.

although

/ôlˈT͟Hō/

conjunction

Despite the fact that; however.

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