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    #pencil#balance#balancing#atom#inverted#pendulum

    How Long Can You Balance a Pencil?

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    Go Tutor posted on 2014/09/20
    Ever wondered how long you could *actually* balance a pencil on its tip? This video dives into the fascinating physics behind it, exploring concepts like the inverted pendulum and center of mass. You'll pick up some awesome advanced vocabulary and learn about the surprising quantum limits that make this challenge so tricky!

    Video vocabulary

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    tip

    US /tɪp/

    ・

    UK /tɪp/

    • Transitive Verb
    • To pour or move something from a place, container
    • To give extra money for good service
    • Noun
    • End point of e.g. a pencil or finger
    • Extra money given for good service
    A2
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    fall

    US /fɔl/

    ・

    UK /fɔ:l/

    • Noun
    • Season after summer and before winter; Autumn
    • A drop in amount; decrease
    • Intransitive Verb
    • To drop in amount; to decrease
    • To come down from a higher position suddenly
    A1
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    point

    US /pɔɪnt/

    ・

    UK /pɔɪnt/

    • Noun (Countable/Uncountable)
    • An item to be discussed
    • Small spot or dot
    • Intransitive Verb
    • To face a certain direction, e.g. north
    A1TOEIC
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    object

    US /ˈɑbdʒɪkt/

    ・

    UK /'ɒbdʒɪkt/

    • Noun (Countable/Uncountable)
    • Something you can see or touch, but is not alive
    • Goal or purpose of a particular plan or activity
    • Verb (Transitive/Intransitive)
    • To disagree; to protest against an idea or plan
    • To state one's reason for disagreement
    A2TOEIC
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    energy point vocabulary

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