Valid until 13/11/18. Can’t be combined with other discount codes or volume discounts (from 6 products), or towards gift vouchers. Valid on www.spreadshirt.co.uk. Not valid in Spreadshirt’s Partner Shops.
In quantum mechanics, the Heisenberg uncertainty principle states precise inequalities that constrain certain pairs of physical properties, such as measuring the present position while determining future momentum; both cannot be simultaneously done to arbitrarily high precision. That is, the more precisely one property is measured, the less precisely the other can be controlled or determined.