Thermal imaging makes it possible for us to see how hot a given object or appliance is at any given time. Things that are very hot appear yellow and orange. The temperature scale in these photos starts out from the the hottest to the coldest as such: yellow, orange, red, purple and black.
The gallery has 23 images in total and it's quite fascinating to look at how hot certain familiar objects get in your home. The last image is of a laptop and how hot it can get. That makes a lot of sense, since some laptops can generate quite a bit of heat. All computers generate heat, though desktops have an easier time cooling down, thanks to bigger fans and water-based cooling technology.
Take a look at the full gallery over at the Telegraph. We're sure you're going to enjoy seeing the one with butter on top of fresh toast! [via Crunchgear, photos by Scientifica/Visuals Unlimited/Corbis]