• Natanael@slrpnk.net
    link
    fedilink
    arrow-up
    2
    ·
    1 year ago

    Heat is energy release, your start with stored energy and release it. To make something cold you either have to capture energy (hard) or move it away (heat pump / refrigeration)

    Laser setups that can cool individual atoms exists but they’re not trivial whatsoever and they cool them by canceling atomic movement by hitting them with lasers opposing their current momentum to slow them down (cooling). It can not be scaled up in any practical way.