Gas burners are devices that use natural gas or propane to produce a flame for cooking or heating. They are commonly found in kitchens, where they provide a quick and efficient way to prepare food. Gas burners can be adjusted easily to control the heat level, making them versatile for various cooking methods. These burners typically consist of a metal grate, a burner head, and a control knob. When the gas is ignited, it creates a flame that heats pots and pans placed on the grate. Safety features, such as flame failure devices, help prevent gas leaks and ensure safe operation.