Subtitles & vocabulary
How Blue LEDs Changed the World
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April Lu posted on 2019/04/29Ever wonder how those bright, energy-saving LED lights came to be? This video dives into the incredible story of the blue LED, its inventors like Shuji Nakamura, and how this Nobel Prize-winning tech revolutionized lighting and energy efficiency worldwide! You'll pick up some fascinating vocabulary about semiconductors and climate impact along the way.
Video vocabulary
material
US /məˈtɪriəl/
・
UK /məˈtɪəriəl/
- Noun (Countable/Uncountable)
- Cloth; fabric
- Supplies or data needed to do a certain thing
- Adjective
- Relevant; (of evidence) important or significant
- Belonging to the world of physical things
A2
More ingredient
US /ɪnˈɡridiənt/
・
UK /ɪnˈgri:diənt/
- Noun (Countable/Uncountable)
- Food item used when making a meal or drink
- Quality necessary to be something to work well
B1TOEIC
More routine
US /ruˈtin/
・
UK /ru:ˈti:n/
- Adjective
- Happening or done regularly or habitually
- Always the same; boring through lack of variety
- Noun (Countable/Uncountable)
- Regular or habitual way of behaving or doing
- Series of actions that make up a performance
A2TOEIC
More experience
US /ɪkˈspɪriəns/
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UK /ɪk'spɪərɪəns/
- Countable Noun
- Thing a person has done or that happened to them
- An event at which you learned something
- Noun (Countable/Uncountable)
- Knowledge gained by living life, doing new things
- Previous work in a particular field.
A1TOEIC
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