The physics of "heaven fire": A study of heat and electricity in local wisdom of Northwestern East Java.

Local wisdom is a tradition or habit passed down by a group of people in the past and arises from a strong understanding of the surrounding environment. Heaven fire is a local wisdom that can be used as a medium for understanding physics concepts for students to make them easier to understand. Heaven fire occurs because of a burst of natural gas from the ground, which is ignited by fire until it burns and does not go out even when it rains. Methods This research was conducted qualitatively with data collection techniques through interviews and literature. Based on the analysis of the data that has been done, it is found that making Heaven Fire a tourist spot is an effective conservation effort by the conditions and capabilities of the surrounding community. In the phenomenon of heaven fire, there is a concept of physics, namely the concept of heat that causes the black body radiation and piezoelectric. Black body radiation is seen on a rock around the fire, the fire of heaven fire makes the temperature of the rock increase and makes it glow or emit an electromagnetic wave. Different temperatures of a rock emit different wavelengths of electromagnetic waves. The other physical phenomenon of Heaven fire is piezoelectric, which is an electric phenomenon that has the most probability of causing Heaven fire. It can make a spark because of pressure, and that spark is the first fire of heaven fire. [ABSTRACT FROM AUTHOR]