Bill
Pickering - A Brief Biography
John Campbell
john.campbell -at- canterbury.ac.nz
(I first wrote a version of this for newspapers to mark the opening of
the Pickering/Rutherford/Havelock Memorial.)
It is not well known in New Zealand, or in
America, that the man responsible for America's first satellite, and who led their unmanned deep space research, came from New Zealand.
Bill Pickering, the director of Cal
Tech's Jet Propulsion Laboratory, in the Oval Office of the White House,
presenting a model of Mariner II, which explored Venus, to President
Kennedy. 17th Jan 1963.
Childhood
Havelock in the Marlborough Sounds is unique. Two New Zealand icons
of science and technology, Ernest Rutherford and William Pickering, attended school there.
Bill Pickering was born in Wellington on Christmas eve, 1910. Tragically, his
mother died when Bill was four. He was sent to Havelock to be raised by his paternal grandparents, William
and Kate Pickering. William Pickering had pioneered coach routes in
Marlborough, being the first to drive a coach from Blenheim to Nelson.
Bill's life was much the same as Ern's had been three decades earlier. Feeding the family chickens, hunting for
their eggs, fetching and cutting firewood for the family stove and
fireplaces, fishing off the wharf for herring, and catching eels at
Kaituna River. Their school lives were also similar and both sung at
school or church concerts.
Bill's life interest in electricity was
initially stimulated when Havelock's first electric power scheme opened.
It was a modest one driven by the creek that supplied the town's water
supply and ran for just two hours each evening. But it was enough to
inspire a boy.
In 1923 Bill went to Wellington College.
Radio broadcasting was just starting. Bill's attention turned to this
modern application of electricity. He built a crystal radio set. On
holiday he introduced this new technology to Havelock. His grandmother
was horrified to listen in to the type of popular music broadcast on a
Sunday by a Sydney radio. However, she endeavoured to encourage his
new-found interest. On learning that a crystal (actually a
semiconductor) was the heart of this new magic, she gave Bill one of her
best crystal glasses (a non-conductor) thinking he could use that. In
1924 Bill (aged 13) and Fred White and others founded the Wellington
College Radio Club and built a radio transmitter with which they
communicated, via morse code, with other enthusiasts as far away as the
USA. Wellington College was the first school in New Zealand to hold an
amateur radio license. Bill can still tap out its call sign Z2BL in
Morse code.
Fred White
After graduating from Victoria University
College of Wellington, Fred White in 1929 went to Britain's Cavendish
Laboratory, where Rutherford was director, to work on radio under Jack
Ratcliffe. In 1937 he returned to New Zealand, to the chair in physics
at Canterbury College and with radio research funds Rutherford extracted
from the New Zealand Government. During the war Fred went to Australia
on radar research, where he stayed and eventually rose to a knighthood
and Director of the Commonwealth Scientific and Industrial Research
Organisation - CSIRO.
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University
Education
In 1928 Bill did the engineering
intermediate course at Canterbury College when fate once again
intervened. An uncle married an American woman and they took him to
America. He obtained three degrees from the California Institute of
Technology (Cal Tech), in physics and electrical engineering. Bill
carried out research on the nature and origin of cosmic rays with Robert
Millikan, who had received a Nobel Prize for accurately measuring the
electrical charge on the electron. Bill used a Geiger-Muller tube and
measured its dead-time. (By a quirk of fate, this device started as the
Rutherford-Geiger detector, the first electrical method of detecting
individual charged particles omitted during radioactive decay.)
In 1933 he also built two Geiger tubes and
the associated control electronics to automatically trigger a cloud
chamber photograph when a cosmic ray shower triggered both detectors,
one above and one below the chamber. The shower was generated in a lead
block above the first detector and the cloud chamber was in a large
magnetic field so the charge and energy of the particles produced could
be determined. This work was published in Anderson, Millikan,
Neddermeyer and Pickering, Physical Review, 45 352-363
1934. Carl Anderson received the Nobel Prize for his proof, using such
equipment, that positive electrons existed.
Bill's main interest switched to
transmitting data from balloon-born equipment, then later from early
rocketry flights. Cal Tech was a prewar pioneer in rocketry.
The photo shows Bill (in the telemetry van)
with Robert Millikan in Mexico c1942 carrying out balloon-borne cosmic
ray experiments.
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Reaching
for Space
Bill was on the staff at Cal Tech
from 1936, and, in 1944, also joined its Jet Propulsion Laboratory
(JPL). In 1947 his frequency modulation telemetry system for
transmitting data from rockets was adopted as the standard. In 1947 Bill
headed the JPL team which converted the Corporal research rocket into
the USA's first surface-to-surface guided ballistic missile. He was
elevated to Director of JPL in 1954.
The USA administration was not
interested in putting a satellite in orbit as such effort would take
resources from the military rocket programme. That attitude changed
overnight when, on October 4th 1957, Russia launched Sputnik 1. The
space race was on. Not suprisingly, Bill chose a comsic ray experiment
for his first payload. The principal researcher was James Van Allen who
was tracked down to being on an ice-breaker in the Antarctic and rushed
home through Christchurch to begin work assembling the equipment. The
heart was a GM tube, continuing the link back to Ernest Rutherford.
Within four months of Sputnik, Bill was ready to launch. He had worked
for the Army on medium range rockets (200 or so kilometres). The Navy
had been responsible for long range rockets so, in front of a large
media contingent, the Navy launched first. Their vanguard rocket blew
up on the launch-pad, to considerable national embarrassment.
JPL launched in secret on January 31st 1958. Astutely, Bill, in Washington,
was going to wait until Explorer 1 had completed one orbit before
making any announcement. When the time came for the satellite to emerge
from behind the Earth there was only silence. A few agonising minutes
later, the radio signals were picked up. The satellite had gone into a
slightly different orbit so took longer rounding the Earth. For Bill it
was the longest wait of his life. The midnight Press conference brought
in an excited and large crowd of media people. By morning Bill was
famous throughout America, even though the Army claimed all the credit.
The USA's space programme was
quickly condensed into a new, non-military agency The National
Aeronautical and Space Agency (NASA). Bill was offered a choice for
JPL's role: Earth satellites, the manned space programme or unmanned
deep space research. He chose the latter, a role JPL fulfills well to
this day. For some years the USA played catchup with Russia's space
programme. It wasn't until 1963 that the USA finally beat Russia at
something. JPL's Mariner spacecraft to Venus propelled Bill onto the
first of his two covers of Time magazine.
Many other missions followed,
including close-up photography of the moon to choose landing sites for
the manned programme. Bill regards the Ranger VII spacecraft of 1964 as
one of his major achievements. As indicated by the number their were
prior failures. Before impact, Ranger IV returned the first close-up
photographs of the Moon's surface, paving the way for Neil Armstrong's
first steps on the Moon on the 20th of July 1969.
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Honours
Bill's many honours include a National Medal
of Science (the USA's highest scientific honour), an honorary knighthood
from the Queen, and an Order of Merit from New Zealand.
With the substantial monetary prize which
accompanied the 1993 award of the Francois-Xavier Bagnoud Aerospace
Award, Bill established a scholarship to allow excellent New Zealand
students to do research at Cal Tech.
It is fitting that in a small village in New
Zealand there is on the landscape a permanent monument, honouring two
New Zealand country boys who rose to international fame through their
interest in science and technology. A place where New Zealanders can
come to learn about, and appreciate, a space pioneer, and where
Americans can learn of the New Zealand connection.
The photo shows Bill giving a public lecture
at the Christchurch Town Hall after receiving an honorary PhD in
Engineering from the University of Canterbury, 18th March 2003.
Bill died at his home, of pneumonia
following a respiratory infection, on March 16th 2004 age 93.
Other
Short Biographies
New Zealand Edge (www.nzedge.com)
has a heroes section which includes several New Zealand scientists,
including Pickering. I do not know who wrote this article.
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