Frozen ground occurs when ground temperature drops below 0°C. Permafrost is permanently frozen soil, gravel, and sand below surface
Air conditioners offer six standard modes: Cool, Dry, Fan, Turbo, Sleep, and Eco. Modes are designed to optimize temperature based on weather and humidity
Atmosphere is a layer of gases held by gravity around astronomical objects. Planets retain atmospheres when gravity is great and temperature is low. Stellar atmospheres are outer regions of stars above photosphere
Cherrapunji is a sub-divisional town in Meghalaya, India. Located at 1,430 meters elevation on Khasi Hills plateau. Receives annual rainfall of 11,777 millimetres, second only to Mawsynram. Experiences mild subtropical highland climate with monsoonal influences
Ice age is a long period of reduced Earth temperature with ice sheets. Earth is currently in Quaternary glaciation, with last glacial period ending 11,700 years ago. Glacial periods are cold, interglacials are warm periods within ice ages
Inverter technology reduces AC energy consumption by 20-50% compared to traditional compressors. Inverter compressors can adjust speed based on load, similar to engine operation. Inverter technology evolved from reciprocating to rotary compressors