Sjmarf@sh.itjust.works to fucknestle@lemmy.world · 1 year agoSeriously, Nestle? There’s no way this makes any real differencesh.itjust.worksimagemessage-square65fedilinkarrow-up1526arrow-down118
arrow-up1508arrow-down1imageSeriously, Nestle? There’s no way this makes any real differencesh.itjust.worksSjmarf@sh.itjust.works to fucknestle@lemmy.world · 1 year agomessage-square65fedilink
minus-squarejarfil@lemmy.worldlinkfedilinkarrow-up31arrow-down3·edit-21 year agoPaper reflects light for white, ink absorbs light for black. OLED and CRT screens stay off for black, use power for light. LCD screens keep the backlight on all the time, only hide it for color/black. E-ink works like paper… but has low refresh rates and the displays tend to break somewhat easily. If we all used dark mode on OLED screens, we could save maybe 0.0000001% of energy, making everything “more sustainable”.
minus-squareadmiralteal@kbin.sociallinkfedilinkarrow-up17arrow-down1·1 year agoLCDs do not stay off for black. LCDs fill the entire back with bright white light and then shutter off pixels to make them black. The energy used between displaying white (the backlight) and displaying black is basically the same. OLED is a bit more complex.
Paper reflects light for white, ink absorbs light for black.
OLED and CRT screens stay off for black, use power for light.
LCD screens keep the backlight on all the time, only hide it for color/black.
E-ink works like paper… but has low refresh rates and the displays tend to break somewhat easily.
If we all used dark mode on OLED screens, we could save maybe 0.0000001% of energy, making everything “more sustainable”.
LCDs do not stay off for black. LCDs fill the entire back with bright white light and then shutter off pixels to make them black. The energy used between displaying white (the backlight) and displaying black is basically the same.
OLED is a bit more complex.