Thermal: meaning, definitions and examples

Etymology

• The word originates from the Greek word 'thermos,' meaning heat.
• Inspired by the ancient understanding of heat, the term has evolved but still relates closely to warmth.
• In the 14th century, the term began to be used in English to describe various heating phenomena.

Science

• Thermal energy is the energy that comes from the temperature of matter; the higher the temperature, the more thermal energy it has.
• In thermodynamics, the study of energy transformations, thermal efficiency measures how well an energy conversion process turns heat into useful work.
• Thermal conductors, like metals, transfer heat easily, while insulators, such as rubber, do not.

Technology

• Thermal imaging cameras detect heat patterns and create images, widely used in medical diagnostics and surveillance.
• Many industries implement thermal barriers to enhance energy efficiency and protect structures from extreme temperatures.
• Spacecraft utilize thermal protection systems to shield them from the intense heat of re-entry into Earth's atmosphere.

Environment

• Geothermal energy, harnessed from the Earth’s internal heat, is a sustainable energy source providing electricity and heating.
• Thermal pollution occurs when industries discharge heated water back into rivers or oceans, harming aquatic ecosystems.
• The urban heat island effect describes how cities can become significantly warmer than surrounding areas due to human activities and infrastructure.

Cultural References

• In fashion, thermal wear is popular for staying warm during cold seasons outdoors, especially for activities like skiing.
• Thermal baths, common in places like Iceland, use natural hot springs for relaxation and health benefits.
• In literature, 'thermal systems' often symbolize comfort or survival in hostile environments, reflecting the struggle against cold.

At position #2,734, this word belongs to solid intermediate vocabulary. It's frequently used in both casual and formal contexts and is worth learning for better fluency.

• ...
• 2731 membrane
• 2732 maybe
• 2733 partnership
• 2734 thermal
• 2735 tasks
• 2736 maintaining
• 2737 domain
• ...