The Universe's Background Noise with Neil deGrasse Tyson

White Noise Defined

Neil deGrasse Tyson and Chuck Nice explore the concept of white noise, describing it as a combination of all audible sound frequencies that results in a hiss-like sound. Tyson explains that white noise is akin to white light, which is composed of all colors in the spectrum. This analogy is drawn from Isaac Newton's experiments with prisms, where he demonstrated that white light is made up of all the colors of the rainbow 1.

If you combine all those frequencies of light, the red, the orange, the yellow, the green, the blue, the violet, and combine them all, and you have equal amounts of them all, you get white.

--- Neil deGrasse Tyson

The term "white noise" was borrowed from this concept, as it involves equal frequencies of sound, much like the equal frequencies of light that create white light 2.

   

Cultural Contexts

In a light-hearted discussion, Tyson and Nice delve into cultural references and humorous interpretations of white noise. Nice jokes about creating an album titled "Black Noise," highlighting the playful nature of their conversation 3. Tyson further elaborates on the specificity of white noise, noting that any deviation in frequency balance results in a different type of noise.

If your acoustic noise is clank, clankety, clanking or if you can find any signal within that noise, it's not white noise.

--- Neil deGrasse Tyson

This conversation underscores the importance of understanding the precise nature of white noise, while also acknowledging its place in cultural contexts 4.