Tesla High Frequency Current is also known as:

Tesla High Frequency Current is also known as:

• A. Blue ray
• B. White ray
• C. Infrared ray
• D. Violet ray

Answer: (D)

The main idea is the historical name for Tesla high-frequency current: it’s known as the violet ray. The device uses a glass electrode containing a noble gas that glows purple when the current passes through. That characteristic violet glow gave it the nickname violet ray, and cosmetologists used it for mild warmth, increased circulation, and a tingling sensation on the skin. The other terms—blue ray, white ray, and infrared ray—are not the established name for this device; infrared refers to heat radiation, which is a different concept altogether.

The main idea is the historical name for Tesla high-frequency current: it’s known as the violet ray. The device uses a glass electrode containing a noble gas that glows purple when the current passes through. That characteristic violet glow gave it the nickname violet ray, and cosmetologists used it for mild warmth, increased circulation, and a tingling sensation on the skin. The other terms—blue ray, white ray, and infrared ray—are not the established name for this device; infrared refers to heat radiation, which is a different concept altogether.