gallium
gallium — noun
1. a soft silvery metal that is a chemical element (symbol Ga) with a very low melt
a soft silvery metal that is a chemical element (symbol Ga) with a very low melting point, making it useful in electronics and high-temperature thermometers
Henry showed his science class how gallium turned into a liquid in his warm hand.
demonstrates low melting point ~30°C
The electronics factory uses gallium to make LEDs for smartphone screens.
gallium used in LEDs
Meera stored her gallium sample in a plastic container because it expands when it freezes.
Gallium nitride chips help power the radio antennas on Trang's phone.
Researchers at the lab tested gallium for new types of solar panel designs.
用法筆記
Gallium is safe to handle with bare hands, unlike mercury. Its low melting point (about 30°C) means a small piece can melt from the warmth of your palm.