the.com/thermal
the invisible elevator that hauls hawks, gliders, and dreamers skyward without burning a drop of fuel
means Relating to heat — or, as a noun, a rising column of warm air that lifts birds and gliders.
from From Greek 'thermos,' meaning hot or warm, the same root that warms 'thermometer,' 'thermos,' and 'thermodynamics.' It entered English by the early 19th century as the language of science reached for a precise word for heat. The aviator's sense — the buoyant updraft of sun-warmed air — is a younger relative, born once people started riding those invisible currents.
- free ride
- vultures circle thermals to soar for hours, barely flapping
- sees heat
- thermal cameras read body warmth through total darkness
- underwear origin
- thermal fabric traps body heat in tiny air pockets
- glider lifeline
- sailplanes hunt thermals to stay aloft indefinitely
- hot springs
- thermal vents host life thriving without any sunlight
yellowstone national park — geothermal area in wyoming with 10,000+ hot springs and geysers including old faithful
rotorua new zealand — geothermal region on north island with active geysers, mud pools, and hot springs
iceland geothermal fields — country generates 30% of electricity from geothermal energy, home to geysir geyser