How Does Rainwater Get Stains Out of Things?

Dr. Chris Smith the naked scientist answers your questions on how to get stains out of things and why rainwater works so well. The answer is that rainwater is just fresh water and there will be some stuff from the atmosphere dissolved in it. If you've got hardness in the water it makes sure detergent work much less well because the soap and the detergent gets bound up with the calcium which is dissolved in the water as temporary hardness. What was the tagline for the movie alien in space no one can hear you scream? No they absolutely couldn't we couldn't hear a thing quick voice note you can still get your questions coming in on 024 4605 675 to Dr.