This work is a methodological and didactic proposal that seeks to develop a learning process by encouraging students to learn science from everyday situations that resemble processes difficult to acquire by our senses, which awakens the pleasure of discovering. For this purpose, we propose an experimental setup that can also be constructed by students and can be used as a measurement instrument in the field of spectrum measurement. The proposal is aimed at high school students, but it is also possible to use it with children in primary school.