"Heat rays" refers to intense bursts of heat or energy emitted from a source, often in the form of concentrated beams. It is a term used to describe powerful radiation or heat that can cause intense heat or damage. Full definition
Early in the 19th century, scientists began to speculate that the Earth, surrounded by the frigid vacuum of space, was habitable because its atmosphere contained special molecules like CO ₂ and water vapor, molecules that can absorb heat rays emanating from the Earth and thereby trap its heat. (climatechangedispatch.com)
The thermo - and opto - genetic device, created by team of scientists from the Research Institute of Molecular Pathology (IMP) at Vienna University and a US lab, allows the researchers to focus visible light and heat rays onto specific regions in a fly's anatomy and manipulate the annoying insect's behavior. (sciencebuzz.org)
The problem - solving tropes that require a certain Batman Sonar suit or Superman's heat ray vision all borrow from previous Lego games, so they feel very familiar to fans of Tt's titles. (snackbar-games.com)