erg
CGS energy unit
An erg is a unit of energy or work in the centimeter-gram-second system, equal to the work done by a force of one dyne acting through a distance of one centimeter.
It's a tiny amount—about 100 nanojoules—largely replaced in modern usage by the joule but still encountered in older physics texts.
Separately, an erg is a vast expanse of shifting sand dunes in the Sahara and Arabian deserts.
Fine rock particles
- dunesWind-formed sand ridges
- SaharaLargest hot desert
- gravelLoose small rock fragments
- plateauFlat highland area
reg · barren · windswept · vast · flat · rocky · pebble · Africa
Natural terrain feature
- aeolianCaused by moving air
- erosionGradual wearing away
- depositionFormal testimony under oath
- sedimentParticles settling in liquid
wind · weathering · deflation · saltation · loess · geologic · terrain · surface
SI energy quantity
- calorieUnit of thermal energy
- workEffort toward a goal
- newton-meterUnit of torque
- foot-poundUnit of work
BTU · kilowatt-hour · kilojoule · megajoule · gigajoule · therm · millijoule · microjoule
Luminous astronomical object
- transverseExtending sideways across
- linearArranged in straight succession
- crescentCurved sickle-like arc
- ridgeNarrow raised strip
windward · crest · migration · accumulation · formation · aeolian · deposition · pattern
sand
Fine rock particles
plateau · reg · barren · windswept · vast · flat · rocky · pebble · Africa · Arabia
landform
Natural terrain feature
- aeolianCaused by moving air
- erosionGradual wearing away
- depositionFormal testimony under oath
sediment · wind · weathering · deflation · saltation · loess · geologic · terrain · surface · pediment
joule
SI energy quantity
- calorieUnit of thermal energy
- workEffort toward a goal
- newton-meterUnit of torque
foot-pound · BTU · kilowatt-hour · kilojoule · megajoule · gigajoule · therm · millijoule · microjoule · physics
star
Luminous astronomical object
- transverseExtending sideways across
- linearArranged in straight succession
- crescentCurved sickle-like arc
ridge · windward · crest · migration · accumulation · formation · aeolian · deposition · pattern · Namib
machine
Power-driven working device
- indoorWithin a building
- trainingDeveloping abilities through practice
- workoutStructured physical exercise
splits · monitor · handle · stroke · damper · watts · meters · pace · interval · steady-state
- desertsand, sand dunes, sand dune, dune, dunes
- landformsmountain, cliff, valley, volcano, mountain ridge
- desert featuresmirage, sandstorm, sand dunes, oasis, dust devil
- desertsSahara, Gobi, Mojave, Namib, Kalahari
- sandcoarse sand, desert sand, fine sand, grains, quartz sand
- unitsunit, angstrom, yard, meter, base units