Comment on Are Increased Colorectal Cancers Rates Linked to Using Laptops on Stomachs?
peopleproblems@lemmy.world 2 weeks ago
Ah, there’s the key part that keeps confusing people: “Energy” when they are thinking of “Power.”
Energy is a property of a thing. Power is the amount of energy (property of thing) transported over time.
It’s impossible to list all the energies you interact with from a laptop, but here’s a few:
- Various photons from the screen. A photon’s energy is based on its wavelength. A higher energy photon has shorter wavelengths.
- The mass of the keyboard is an energy equivalent. A property of the laptop.
- The photons transmitted by Wifi, Bluetooth, or other radio sources - these are actually all a lower energy than the ones from a screen.
Power just means more of those flowing. An infinite number of Wifi photons can hit Carbon, Hydrogen, and Oxygen (most commonly in DNA) and they will never knock an electron off. Same with the photos from your screen. That doesn’t mean there will be no effect.
Wi-Fi photons in the 2.4Ghz range do transfer energy into water molecules and increase their total kinetic energy (since they can’t “gain mass” this means velocity). Increased Kinect energy really means increased heat. Enough heat, leads to burns.