An Experiment In Edge Damage
.... centimeter thick, from a local deciduous tree was used
as the wood subject. The exact species of the tree is unknown; however, it
was a very hard wood and a light brown/tan color.
Initially, medium pressure was used on the flake and it was moved
in bi-directional strokes across the stick. After about thirty strokes,
the use edge angle prohibited the flake from cutting further in to the
stick. The cut was roughly three millimeters deep and three quarters
millimeters wide. It could be determined .....
|
|
Radon
.... America Heritage Dictionary
of the English Language, Third Edition, 1992). A radioisotope is a
radioactive isotope (The America Heritage Dictionary of the English
Language, Third Edition, 1992). A radioisotope is a naturally or
artificially created isotope having an unstable nucleus that decays,
letting off alpha, beta, gamma rays until stability is reached (The America
Heritage Dictionary of the English Language, Third Edition, 1992). Radon's
melting point is -71°C. The boiling point is -61.8°C. Radon .....
|
|
The Science Of Cloning
.... public's fear shows up in the nation's
congress and even the president. Who knows the real opinions of the
individuals in congress, but as long as the general public is against
cloning, politicians will be too, so they can gain support from voters.
Even with all these setbacks, there are still major uses for cloning
research. Uses that will never present themselves unless people put down
their moral, ethical, and religious shields and allow the research to take
its course. Regardless of the majori .....
|
|
The Sun
.... have been invented to help study the sun
are the coronagraph, the spectroheliograph, the magnetograph, and the
spectrograph. These tools have enabled us to better understand the
magnetic field of the sun and individual characteristics of the sun.
Pictured
above is Galileo
Composition of the Sun
The radiation that Earth receives from the sun is quite remarkable.
The radiation that we receive varies less than 1% over a period of twenty
four hours. However this less than one billionth .....
|
|
Uranium: Nuclear Friend Or Nuclear Foe
.... after entering the mines.
It was two german doctors, Harting and Hesse, who brought this to
the public. The doctors found that 75 percent of the miner deaths were due
to lung cancer. But with their scientific knowledge the doctors could only
assume that the deaths were caused by the inhalation of arsenic. Later
studies between 1900 and 1940 found that the deaths were caused by
radiation in the mines.
The radiation the miners were exposed to would later be identified
as uranium. Uranium is a natural o .....
|
|
The Big Bang Theory Vs Biblical Views
.... Theory" states that fifteen billion years ago, give
or take five billion years, the entirety of our universe was compressed
into the confines of an atomic nucleus. Known as a singularity, this is the
moment before creation when space and time did not exist. According to the
prevailing cosmological models that explain our universe, an ineffable
explosion, trillions of degrees in temperature on any measurement scale,
that was infinitely dense, created not only fundamental subatomic particles
and thus matter .....
|
|
Microbursts
.... However, there are two
types of down drafts that are particularly hazardous to flight operations
because of there severity and small size. Professor T. Fulita, an
atmospheric scientist from the University of Chicago, coined the term
downburst for a concentrated, sever downdraft that induces an outward burst
of damaging winds at the ground. He also introduced the term microburst for
a downburst with horizontal dimensions of 4km or less (Lester 11-4).
Microbursts form by the same process that produce the m .....
|
|
The Human Genome Project
.... to the
human genome. The initial planning process culminated in 1990 with the
publication of a joint research plan, Understanding Out Genetic
Inheritance: The U.S. Human Genome Project the First Five Years FY 1991-
1995.' The goal of the HGP is to generate a series of tools that will
change biological research.
The complete nucleotide sequence of human DNA is approximately
50,000 to 100,000 genes in the human genome. The Human Genome Project
estimated to take ten to twenty years to complete. During .....
|
|
Organic Compounds
.... compounds can be considered as derivatives of the hydrocarbons. If
the carbon atoms are linked in chains, the compounds are called aliphatic
compounds. If the atoms are linked in rings, the compounds are called
cyclic compounds. (pg.581, ...ibid...)
(Biology Pamphlet)
In terms of naming organic compounds the number of carbon-carbon
chains are named using the prefixes below:
meth- 1 carbon
eth- 2
prop- 3
but- 4
pent- 5
hex- 6
.....
|
|
The Lowell Observatory
.... looks over the city. You are guided through a
tour and experiments, and also are allowed to use the telescopes they have
located on Mars Hill.
There are a total of nine telescopes, eight which are at the
observatory, of these many of them are historic, such as the 24" Clark
Refractor that is 102 years old. The Pluto telescope dome and John Vickers
McAllister telescope dome, which is 16" long, are also telescopes you would
find at Lowell Observatory. The most modern telescope they have ther .....
|
|
Chlorofluorocarbons (CFCs)
.... the percentage increase of CFCs in the atmosphere has been higher
than any other greenhouse gas. By 1990 the increase was 4-12% a year.
CFCs also destroy ozone - itself a greenhouse gas - their net
effect on climate is unclear. The strength of the indirect effect of ozone
depletion depends on variables such as temperature of the upper atmosphere
and cannot yet be measured with any confidence. According to new research,
however, it is possible that the indirect effect of CFCs cancels out some
or .....
|
|
The Giraffe
.... danger thanks
to their height and good sense of smell and eyesight. They can be fast
and can reach speeds of up to 35 mph.
Females spend over 12 hours a day looking, while males are less.
Night mostly spent lying down ruminating, especially hours after dark and
before dawn. A Giraffe has 2 ways of getting around which is walking and
galloping. The long legs and short trunk decree an ambling walk, with the
entire weight supported alternatively on the left and right legs, like
camels. The long nec .....
|
|
The Roswell Incident
.... On July 8, 1947 the headline of the Roswell Daily Record
read "RAAF Captures Flying Saucer on Ranch in Roswell Region." The next
day, the headlines read "Weather balloon was mistaken as UFO." Many people
wonder how someone with military experience could mistake a weather balloon
for a UFO, which is why they are inclined to believe the first military
report. From this point on, many people were suspicious of the United
States Government because the facts were being withheld from the public at
the Roswel .....
|
|
The Kangaroo
.... a small mouth. The fur is soft and woolly and
some can have stripes on them. The kangaroo's body is specially built for
jumping. It has two long, powerful hind legs with four toes on each. The
front legs are short and have five toes with claws. These paws are used to
handle food. Most of it's weight it in the hind legs and tail. Kangaroos
can jump across flat land up to thirty miles an hour. Even though it is
quite timid, kangaroos can fight very hard. They use there paws to position
an opponent, and .....
|
|
Magnesium
.... J.K -1.kg at 20ēC
Vapour pressure 20 Pa at 527ēC(s)
360 Pa at 650ēC (1)
1400 Pa at 727ēC
Valence states Mg2+
Viscosity 1.25 cp at 650ēC (1)
The magnesium element has the atomic number of 12 and atomic weight of
24.3050. It's symbol is Mg. The group number that mg is in is group 2a.
It's electronic configuration of
[Ne].3 s2.
Physical data
Standard state: solid at 298 K
Colour: silvery whi .....
|
|
|
|
