Why are there left- and right-handed scissors?
From Valerie Carson
The arrangement of right-handed and left-handed scissors’ blades takes into account the mechanics of the hand’s grip to optimise cutting and allow the user to see what they’re cutting clearly. When you use a pair of scissors, as well as a vertical motion your hand creates a lateral squeeze, with the thumb pushing slightly away from the palm. Right-handed scissors are engineered to harness this motion to push the blades together, but when used in the left hand, the blades are pushed apart. To create the same effect, left-handed scissors are a mirror image of right-handed ones.
Answered by Alex Franklin-Cheung for Brain Dump in How It Works issue 101
To feature in our Brain Dump section, send us your questions to [email protected] or message us on Facebook or Twitter
For more science and technology articles, pick up the latest copy of How It Works from all good retailers or from our website now. If you have a tablet or smartphone, you can also download the digital version onto your iOS or Android device. To make sure you never miss an issue of How It Works magazine, subscribe today!