Top-5-UV-Flashlight

1 год назад

This video compares two UV flashlights, one with a 365nm wavelength and the other with a 395nm wavelength. The video demonstrates how the different wavelengths affect the curing of UV-reactive glue, the detection of stains, and the visibility of UV-reactive inks on currency. The video also tests the UV protection of glasses.

1 год назад

This video compares three UV flashlights, a basic Walmart flashlight, a DarkBeam flashlight, and a UV Beast flashlight, by testing them on various minerals. The host shows how each flashlight illuminates different minerals and discusses the pros and cons of each flashlight, including battery life, size, and price.

4 года назад

This video compares 365nm and 400nm UV LED black lights. The presenter demonstrates the difference in visible light output between the two wavelengths, showing how 365nm lights emit minimal visible light while 400nm lights produce a noticeable purple glow. The video also highlights the impact of wavelength on the visibility of objects under the lights.