The levitating flame and the Davy Lamp

Like a magic trick, you can separate a flame from a bunsen burner. I use this effect to explain how a safety lamp works. Here's the Objectivity video: https://www.youtube.com/watch?v=JU9eCtuxyZw Visit my blog here: http://stevemould.com Follow me on twitter here: http://twitter.com/moulds Buy nerdy maths things here: http://mathsgear.co.uk