atmosphere
The unit of pressure used to describe the water resistance of a watch
atomic time standard
A watch that sets its time automatically by receiving radio signals from an extremely accurate atomic clock ...
The atmosphere in which the gem is "baked" is important, as it will influence whether its ions gain or lose electrons. That is, it will determine if a chromophore ion will be changing from Fe3+ ---> Fe2+ or vice versa.
Atmospheres
See Water Resistance.
Automatic
A type of mechanical watch movement that is wound merely by the movement of the wearer's wrist. So long as the watch is worn daily, there is no need to wind it up.
atmosphere.
manometric units:
centimetre, inch, and millimetre of mercury (Torr).
millimetre, centimetre, metre, inch, and foot of water.
An atmosphere of magic and charm has always surrounded rings. There has been a strong believe that both good and bad spirits inhabited rings. One of the many charges levied against Joan d'Arc was that she owned rings of magic.
Today the atmosphere in a Victorian or pseudo-Victorian city pub can seem rather gloomy, as comparatively little daylight passes through the decorated glass of windows and partitions.
To enhance the atmosphere of tranquility, I usually recommend amethyst in your preferred form: clusters, spheres, etc.
An egg of any kind is very soothing to hold. In general, eggs symbolize the first stage for the realization of our goals and dreams.
A famous example is Silver, which develops a yellowish-black coating on its surface when exposed to hydrogen sulfide (H2S), which is present in small quantities in the atmosphere.
Virtually any light-colored Sri Lankan sapphire can be heated to produce a yellow to golden color in an oxidizing atmosphere because these stones naturally possess the Mg2+ needed.
The impact was so forceful that melted rock was thrown at high speeds into the upper atmosphere.
While some people have built appropriate gas atmosphere kilns this is beyond the interests and skills of most individuals in the field.
(Please refer to Section 2 for a discussion of idiochromatism and the chromophores.) This characteristic pink color may darken upon exposure to the atmosphere. Rhodocrosite is known to alter to black manganese oxides or hydroxides.
To turn them blue, the stones must be heated to about 1000°C in a strongly reducing atmosphere for a period of several hours.
Unfortunately the addition of lead or other heavy metals (such as thallium) makes the product very soft and also very subject to attack by gases such as are always present in the atmosphere of cities.
High-Temperature (2,000º C) High-Pressure (70,000 atmospheres) treatment or HTHP was developed by General Electric in 1999, to lighten or totally remove a brownish hue in some Type IIa diamonds.
So, except for the oceans and atmosphere, the Earth today is made up of solid minerals to a depth of about 2900 km. The physics and chemistry of the solid phases of the Earth control much of the physics and chemistry of our environment.
So, while dispersion through water drops in atmosphere produces rainbows, the same rainbow effect occurs in diamond.
When a meteorite enters the Earth's atmosphere, friction raises the surface temperature above its melting point. As the meteorite descends, it slows down, and the heat from friction decreases resulting in a thin layer of dark glass.
Scientists believe that, beneath an outer layer of hydrogen and helium, the gaseous atmospheres of both planets contain 10 to 15 percent methane, a hydrocarbon.
Another Roman legend stated that the stone absorbs the atmosphere of young love: "When blessed and worn, it joins in love, and does great things.
Gold has no oxides and is not affected by oxygen in the atmosphere as are other metals. This is why gold does not tarnish -- tarnish is the result of metal reacting with oxygen in a process called oxidation.
To put it in simple terms, Sapphire heated in an oxidizing atmosphere lightens its color. Heating in a reducing atmosphere enhances the blue color.
This is the equivalent of three atmospheres. The use of the term "Water Proof" is expressly forbidden under the F.T.C. guidelines.
The troposphere is the lowest region in the Earth's (or any planet's) atmosphere. On the Earth, it goes from ground (or water) level up to about 11 miles (17 kilometers) high. The weather and clouds occur in the troposphere.
If it is kept in clothes (pockets) and in all the rooms of a house it can bring about a peaceful atmosphere.
Prospective writers may be very fortunate from its use.
It brings about harmony and inner calm in a person.
Amethyst also purifies a tense, over-sensitive atmosphere in the house.
Worn on the body, amethyst illuminates the mind. You feel calmer and more balanced.
The purple color of this gemstone grants seriousness and introspection.
A protective film that develops on copper on exposure to the atmosphere. In most non-polluted environments it is basic copper carbonate but in industrial and urban areas it is mainly basic copper sulphate.
Meteor A meteoroid that has entered Earth's atmosphere
Meteorite The remnants of a meteor after it has actually impacted the Earth
Meteoroid An object in space; similar to but smaller than an asteroid ...
What this means for you, is that if you shop there today, you can expect a similar atmosphere a year from now. American Gem Society members cannot be a fly-by-night operation.
Oxygen: A nonmetallic element that is normally a colorless, odorless, tasteless gas that constitutes 28 percent of the Earth's atmosphere. Oxygen combines with many other elements easily.
The piece is fired in a reducing atmosphere and the tragacanth burns away releasing the copper salt from the compound.
Patina - The coloration that occurs in certain metals when they are exposed at length to the atmosphere. A thin, greenish layer appears on the surface of copper and bronze; a reddish effect on gold.
Also trapped in amber were bubbles which contained gases that gave strong clues as to the earth’s atmosphere at the time the amber was formed. Most of it was found in the Baltic region.
Amber goes as far back as 5000 B.C.
Heart, kidney, liver & muscle healer; appendicitis;gangrene; red & white corpuscles; digestive tract; cleanses vibrations in the atmosphere; creativity; helps personal clarity; will bring out problems in the solar plexus & the heart; ...
LOCATIONS
Enjoy the scenery, the mineral collecting and the atmosphere of Skye!
MOONEN BAY ...
Corrosion
A attack to exposed metal surfaces due to the influence of atmosphere, moisture or chemicals.
Citrine
Protective stone which alleviates depression and self-doubt and brings personal clarity. Citrine cleanses the vibrations in the atmosphere, aids the digestion and prevents nightmares.
The atmosphere in the mine being so much lower in temperature than the outside air was of course the reason for this.
The greenhouse effect is an increase in the temperature of a planet as heat energy from sunlight is trapped in the atmosphere. Excess carbon dioxide and water vapor increase this effect.
A static pressure test is used to assess leakage and the result is then expressed in bars, atmospheres or meters.
Zvi Yehuda from Israel developed a method by which cracks are filled with a highly refractive liquid (presumably silicon oil) under strong pressure (50 atmospheres) and at temperatures of around 400°C.
a cultured pearl) becoming a barrel-shaped, with only two nacreous caps at the ends; by grease (as from the skin or certain cosmetics), the grease entering the drill-hole by capillary attraction from the string; and by dryness, from dry atmosphere or ...
The jewelers are given the correct amount for the design and then alloy is added to create 14K or 18K gold. The first step is to soften the gold to make it easier to craft. To do this, the jeweler uses an atmosphere control meter to heat the gold to ...
 See also: Stone, Rough, Crystal, Surface, Metal
  
|
RSS
