&
Chocolate Crisps
240kc al 169 kc a l
Both snacks have roughly the same number of
calories by weight, but the calories in milk
chocolate come from sugar and saturated fat,
whereas crisps are mainly starch and
HEAD TO HEADmonounsaturated fat. A packet of crisps
also weighs less than even a small bar of
Dairy Milk. Apart from the salt, crisps are a
bit healthier than chocolate. LV530kcal
56g
18.5 g
0.23g
520kcal
2.6g
2.5g
223 g 1. 2 2g1.22g
5 g 22 .5g
56 gg 22 .6g
5300 kcal 55200 kca
2400 kcaal ENERGY PER BAR/PACKET 11699 kca
ENERGY PER 100G
SUGAR PER 100G
SATURATED FAT PER 100G
SALT PER 100G
Ultimately, the spin of a pulsar is
derived from the spin of the star from
which it formed. And the spin of the
original star is a consequence of the
spin of the gas cloud from which it
formed. Since angular momentum is
conserved, a decrease in an object’s
radius will speed up the rate of
rotation. And since pulsars are
formed by the collapse of ver y large
stars into very small, dense objects,
the increase in spin rate for pulsars is
enormous. Some of the fastest
spinning pulsars (‘millisecond
pulsars’) have also gained speed by
accreting material from nearby
companions. AGWhat starts a
pulsar spinning?
Radiation beamRadiation beamMagnetic fieldNeutron starPHOTOS: ISTOCK X2, GETTY ILLUSTRATION: CHRIS PHILPOTWhy does paper
make so much noise
when crumpled?
It doesn’t take much energy to bend
paper, but crumpling it demands
injecting so much energy into the
fibrous structure of the paper that it’s
not merely bent but is permanently
deformed, creating sharp creases.
Researchers at the University of
Chicago showed that such creases
form suddenly, and release some of the
energy injected in a surprisingly loud
burst of noise. RMCrisps
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