This Smarter Every Day video delves into the intricate world of tattooing, focusing on the mechanical and biological processes involved. Host Destin visits a tattoo parlor, using a high-speed Phantom camera to capture the tattoo application in extreme slow motion. The video explains the components and working mechanisms of both rotary and coil tattoo machines, emphasizing that needles are grouped and deliver ink into the dermis via capillary action. Macro footage vividly illustrates the skin's reaction to rapid needle punctures. Destin also experiences the sensation of tattooing without ink, highlighting the physical impact and the "frosting" effect on the skin. The segment underscores the importance of professional artists and proper sterile practices.
Exploring the Science of Tattoos: Machines, Needles, and Skin Reactions in Slow Motion
0:00 Introduction & Goal: Destin from Smarter Every Day aims to understand the mechanics of tattooing by filming the process in slow motion with a Phantom camera.
0:20 Meeting the Tattoo Artist: Introduces Leah, a professional tattoo artist, who clarifies that the device is a "machine," not a "gun," and explains the importance of sterile practices and wearing gloves.
0:39 Tattoo Machine Types & Components: Leah demonstrates a rotary tattoo machine, detailing its motor, needle bar, tube (grip), and contrasting it with coil machines.
1:18 How Ink is Applied: Destin explains the common misconception that a single needle injects ink. Instead, multiple needles are grouped (e.g., for lining or shading), holding ink via capillary action and dragging it into the dermis upon puncturing the skin.
1:48 Rotary vs. Coil Machine Mechanics: Destin provides detailed explanations of how each machine type operates:
Rotary Machines: Translate rotational motor motion into linear motion for the needle.
Coil Machines: Utilize electromagnets that rapidly pull an armature bar down, breaking a circuit and causing the electromagnetic field to collapse, only for a spring to return the armature and re-energize the circuit, creating a continuous up-and-down motion.
2:30 Warning Against Self-Tattooing: A client named Shawn displays his poorly executed self-tattoo, strongly advising against do-it-yourself tattooing.
2:59 Slow-Motion Skin Interaction: Destin employs special lights and a macro lens to record the needles puncturing the skin at 1500 to 3200 frames per second, showcasing the rapid, repetitive piercing action.
4:14 Experiencing the Needle Sensation: Destin undergoes a "dry run" where Leah uses the tattoo machine on his arm without ink, allowing him to feel the sensation firsthand. He describes it as "not bad" and understands how the "fear" element could be addictive.
4:53 Needle Group Counts: He confirms that the lining needle used had 5 points, and the shading needle had 7 points.
5:43 "Frosting" Phenomenon: Leah points out "frosting," which is the elevation of the top layer of skin that occurs during the tattooing process.
6:29 Reveal of Fake Tattoo: Destin clarifies that his own "tattoo" briefly shown in the video is not real.