A gas burner is a device that utilizes natural gas or propane as fuel to produce a controlled flame for cooking or heating purposes. It is commonly used in stoves, cooktops, and other appliances that require a heat source. Gas burners consist of several key components, including a burner head, gas valve, igniter, and flame control mechanism. When the gas supply is turned on, the burner releases gas through small openings or jets, which is then ignited by the igniter or pilot light. The flame can be adjusted to achieve the desired heat intensity by controlling the gas flow. Gas burners provide instant and precise heat control, allowing for efficient cooking and heating. They are favored for their responsiveness, ease of use, and the ability to quickly adjust heat levels during cooking.