Will laser blasters ever be possible? - Christopher Baird
Learning Stats
CEFR लेवल
Total Words
Unique Words
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सबटाइटल्स (83 segments)
DownloadDropping out of light speed,
a fleet of rebel spaceships is greeted by a frenzy of laser blasts—
illuminating the sector with brilliant bursts of light.
Science fiction has shown us scenes like this for decades,
but the lasers in our daily lives seem far less dazzling and destructive.
Laser eye surgery can cut tissue, and laser cutters can shape wood or plastic,
but neither seems strong enough to pierce a spaceship.
And laser pointers are more likely to annoy a cat than an evil empire.
So could sci-fi laser weaponry ever exist?
Full subtitles available in the video player
Key Vocabulary (18)
Describes a statement, argument, or piece of writing that is clear, logical, and consistently organized. It implies that all separate parts fit together perfectly to form a sensible and understandable whole.
"The essay presents a coherent argument throughout."
A specific size category for items such as clothing, coffee, or containers that is bigger than medium. It is commonly used when selecting from a range of standard sizes in shops and restaurants.
The word 'same' is used to describe things or people that are identical or not different from each other. It indicates that two or more things are exactly alike in every way or are the very same entity.
"We have the same birthday!"
The production and discharge of something, especially gas or radiation, into the environment. It is most commonly used in environmental science to describe the release of pollutants from vehicles, factories, or natural sources.
Describes a space that has a lot of natural brightness or many windows. It also refers to colors that are pale or close to white rather than dark.
"This is very light."
A laser is a device that produces a very narrow and powerful beam of light. This light can be used for many things, such as cutting materials, performing medical operations, or reading barcodes.
Grammar in This Video
"Laser beams, on the other hand, are much more organized."
"For example, the ordinary light from this incandescent bulb..."
"causing each electron to emit a second synchronized photon"
"So could sci-fi laser weaponry ever exist?"
"Laser beams, on the other hand, are much more organized"
"For example, the ordinary light from this incandescent bulb is composed of a rai..."
"They’re monochromatic, meaning their light is composed of a single color"
"Laser eye surgery can cut tissue, and laser cutters can shape wood or plastic"
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