0
The sun purple effect is the result of the formation of color centers due to exposure to ultraviolet light. While thought to be charming in the past, it is now regarded as a defect by many collectors.
Theoretically, it can be reversed by annealing (re-heating) the glass. In practice, the chances are that the piece will crack or melt before all color centers are removed. For this reason, it is considered irreversible, and should be avoided.
Keep your Early American Pattern Glass out of the sun, and if you are a dealer of such, avoid the temptation to artificially purple your merchandise with UV lamps.
What else can I help you with?
If the statement if the sun is shining the its not raining and is assumed to be true is it reverse if its not raining then the sun must be shining and?
No, the reverse of the statement "If the sun is shining, then it’s not raining" is not logically valid. The reverse would be "If it’s not raining, then the sun is shining," which does not necessarily follow. It is possible for it to be cloudy or overcast without rain, even if the sun is not shining. Thus, the original statement does not imply its reverse.
How can a sun light a flame?
magifing glass
If the statement If the sun is shining then it's not raining is assumed to be true is its reverse If it's not raining then the sun must be shining also always true?
No, it is not true.
Why does the sun look distorted during sunset?
I don't Know but the sun rise and the sun set because of God when the sun comes up and down we should wear a sun glass to protect our eyes
When the sun goes through a magnifying glass what is it called?
When the sun's rays pass through a magnifying glass, it is known as focusing or concentrating the sunlight. This process can create a hot spot where the light converges, resulting in increased temperature at that point.
What color is glass recycled?
purple
What frequencies of visible light are transmitted through a piece of glass if the glass appears purple?
If the glass appears purple, it means it is absorbing most of the green, yellow, and red light frequencies. This leaves mainly blue and red light to be transmitted through the glass, giving it a purple appearance.
When was Deep Purple - Sun Ra album - created?
Deep Purple - Sun Ra album - was created in 1953.
If the statement if the sun is shining the its not raining and is assumed to be true is it reverse if its not raining then the sun must be shining and?
No, the reverse of the statement "If the sun is shining, then it’s not raining" is not logically valid. The reverse would be "If it’s not raining, then the sun is shining," which does not necessarily follow. It is possible for it to be cloudy or overcast without rain, even if the sun is not shining. Thus, the original statement does not imply its reverse.
Is sun glass transparent or translucent?
Glass is transparent
What will be the colour of a red rose vied from a green glass?
purple
What will be the colour of a yellow rose vied from a purple glass?
grey
How do you divide the word sunglasses into syllables?
There are three syllables. Sun-glass-es.
There are two alternate flower colors the pea plant they are purple and white purple is dominant over white purple and white are called what?
A grape, A purple sun, A purple cloud and A purple Teddy!
What does sand and water make?
sand makes glass and glass make sand its a reverse psychology :)
Who is K W Diefenbach?
he is a reverse glass artist from the 1800's
Who is the artist who signed the reverse glass painting Morro?
Albert namatjira did
