Videos, Gifs & SlideshowsGo Science! Awesome Science Videos Invisible Ink. By IP Factly - Aug 19, 2015 0 3 Share on Facebook Tweet on Twitter Go Science! Awesome Science Videos… Learn how to make invisible ink using lemon juice and a heat source. Watch the video to find out more.. Even More Awesome Science Videos Found an awesome science video? Contact us with the link and we’ll include it with a thanks.