How does radiation travel? Gamma rays travel like any other electromagnetic waves - cutting a fairly straight line through world. They can move through a vacuum, or through air or water. They can also cut through light elements like aluminum or most metals. Lead can cut down on gamma radiation, but it can't really stop it. One inch of lead will cut any amount of gamma radiation by half. Another inch will cut it by another half, and so on, and so on.
1 The most points are available at Tesco alliance stations (1 point for every Â£3 spent). 2  Elsewhere it's 1 point for every 2 litres of fuel. 3  Shell: The Shell Drivers Club and V-power Clubs offers shopping vouchers, Avios and other rewards. Elsewhere it's 1 point for every 2 litres of fuel. 2  Shell: The Shell Drivers Club and V-power Clubs offers shopping vouchers, Avios and other rewards. 3  V-power offers double points when cardholders buy the fuel of the same name but, as with BP, that's more expensive.
Nectar is one of the biggest loyalty schemes covering several retailers and both Sainsburyâs and BP petrol forecourts. Youâll earn one Nectar point for every litre of fuel you purchase at a Sainsburyâs or BP petrol station and two points for every Â£1 you spend in a BP or Sainsburyâs store.orrisons Miles. The Morrisons Miles scheme will give you up to 10 âmilesâ for every litre of petrol you buy. Collect 5,000 miles and youâll be rewarded with Â£5 of in-store shopping vouchers. You can sign up for the scheme at your nearest Morrisons forecourt.