Our writers talk back

Some of the previous contributors to the Green Room respond to readers' questions and comments.

news.bbc.co.uk

Venomous mammal caught on camera

Rare footage of one of the world's most strange and elusive mammals is captured by scientists.

news.bbc.co.uk

Heat may spark world food crisis

Half the world's population could face food crisis by 2100 as soaring temperatures cripple staple crops, scientists warn.

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Holes give edge to new armour

Scientists from the UK Ministry of Defence (MoD) have devised ultra-hard vehicle armour to protect military personnel.

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Black holes 'preceded galaxies'

Astronomers believe they have solved a cosmic chicken-and-egg question: what came first - black holes or galaxies?

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Tech fair offers greener vision

Analysts at the Consumer Electronics Show say green credentials of tech products will become critical to success.

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Eat it or lose it - why centuries of crop diversity are at risk

Centuries of crop diversity are at risk of being lost forever as farmers turn to just a few modern, high yielding varieties.

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Earth Watch

Why it is hard to predict sudden environmental crises

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Feilden's blog

Ground-breaking new technique in stem cell science

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First flight of algae-fuelled jet

Continental Airlines is the latest to test fly a jet biofuel, this time with a product derived partially from algae.

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'Wolfman' returns

Explorer Jim McNeill tracks down Arctic wolves

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Mummy of female pharaoh uncovered

Egyptologists find remains of a mummy thought to belong to a queen who ruled 4,300 years ago, Egypt's antiquities chief announced.

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Canadians claim South Pole record

A trio of Canadians claim a new record for the fastest trek across Antarctica to the South Pole.

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Baby Jupiter's huge weight gain

The planet Jupiter must have gained mass fast during its infancy, according to astronomers.

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US vows 'huge' marine protection

The US is to establish "the largest area of protected sea in the world", banning fishing and mining, around its Pacific islands.

news.bbc.co.uk

Panda bites his third tourist in two years at Beijing zoo

A panda at Beijing zoo bites a man for the third time in two years.

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Beagle hunter

On a mission to find the most famous ship of science

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Everest trip helps critically ill

Blood oxygen levels recorded on a trip by medics to Everest could help the treatment of critically ill patients.

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Mosquitoes make sweet love music

Sexy songs sung by mosquitoes in courtship could be key to curbing the spread of dengue fever, say scientists.

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Body repair 'could be ramped up'

A combination of drugs could trick the body into sending its repair mechanisms into overdrive, say scientists.

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Poetry or science?

Is romantic love just a chemical cocktail?

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China alert over bird flu death

Chinese authorities shut down and clean poultry markets in Hebei province, after the first human death in nearly a year.

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Zimbabwe troops 'eat elephants'

A Zimbabwean wildlife campaigner tells the BBC that soldiers are being given elephant meat to eat, as the economic crisis deepens.

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A deep-sea fish caught in the Pacific has mirrors for eyes

A deep-sea fish caught in the Pacific has eyes which use mirrors as well as lenses, scientists discover.

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Animal matters

Scotland's debate over tests on primates

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 Science > Technology > Electronics > High Voltage

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Science > Technology > Electronics > High Voltage

High Voltage:

Detecting the Earth's Electricity

An article from Scientific American 1999 about the field mill voltmeter and the results on Earth's electricity.

http://www.sciam.com/article.cfm?articleID=00000ED3-69CA-1C72-9EB7809EC588F2D7

Gamma High Voltage Research, Inc.

Offers over 50 years experience in the design and manufacture of high voltage power supplies and instrumentation.

http://gammahighvoltage.net

Graand

Free Classified Ads Portal

www.graand.com

High Voltage

Tips and construction details for HV projects. components, measuring techniques, sources, and details of experiments.

http://www.kronjaeger.com/hv/

High Voltage Equipment Suppliers

A link list of high voltage component suppliers.

http://home.earthlink.net/~jimlux/hv/supplier.htm

High Voltage Information

High voltage reference information, including articles, books and relevant links. Also included is a buying guide for high voltage parts, instruments and services.

http://www.highvoltageinfo.com/

High Voltage Link List

A list of links for electrostatic machines, history of physics and electricity, high voltage devices, and electronics.

http://www.coe.ufrj.br/~acmq/links.html

Information Unlimited

Science projects for the electronics hobbyist, including Tesla coils and power supplies, high voltage engineering, neons, power supplies, and transformers.

http://www.amazing1.com/

Modi Arc Electrodes Co.

Company produces electrodes, welding carbon steel, stainless steel TIG wires, low heat welding alloys, welding electrodes, copper alloy, mild steel electrodes, low hydrogen electrodes, high tensile steel electrodes. Located in Mumbai, India.

http://www.weldingelectrodes.net/

Penguin's Lab

Paul Peng's high voltage and other electronics related projects including Marx generator, Tesla coils, coilgun and pulse discharge.

http://www.penguinslab.com

PV Scientific Instruments

Working models of apparatus used in great discoveries in electricity, magnetism and atomic physics.

http://www.arcsandsparks.com/

Repro's of Classic HV texts

Quite a few reproductions of classic High Voltage texts from the "Golden Age" of High Voltage research.

http://www.arcsandsparks.com/reprintpage.html

Sam Barros' PowerLabs research

Presents Sam Barros' high voltage research. Page includes diagrams, pictures, movies and descriptions of different devices such as high voltage generators, Tesla coils, plasma globes, Gauss and coil railguns.

http://www.powerlabs.org/highvoltage.htm

Sam's Gadget FAQ

Salvaging interesting gadgets, components, and subsystems. Including HV parts from hither and yon.

http://www.repairfaq.org/sam/gadget.htm

What is High Voltage

A guide to online information about high voltage. It features a number of resource links including that on high voltage applications and component suppliers.

http://www.chipcenter.com/circuitcellar/november99/c119r16.htm

15 th International Symposium on High Voltage Engineering

Symposium on High-Voltage Engineering, ISH 2007, will be held in Ljubljana, Slovenia, on August 27-31, 2007. (October 1, 2007)

http://www.ish2007.org