If I take a regular infrared lamp, add a dimmer, and turn it on low, will I get a longer wavelength, lower frequency, and far infrared (FIR) light? - Quora
Infrared Lamp BR125 IR 250W E27 Red Soothing Heat for Relaxation lamp red, Philips
Amazon.com: Akarishin Red Light Therapy Lamp- 660nm Red Light,850nm & 940nm Infrared Light Therapy with Height Adjustable Stand,Timer with Digital Display - Effective for Body Pain and Skin Vitality,3 Head : Health
Infrared Heat Lamps vs. LED Light Therapy Devices | Joovv