Crystal is a special type of high quality glass that contains lead. It has different properties than ordinary glass such as being heavier, having a lower softening temperature, and being less viscous when worked. Most importantly, crystal has a higher refractive index than glass, which allows it to refract light and appear more brilliant and sparkling. Because of its beauty, crystal is often used to make jewelry, sculptures, chandeliers, and ornaments, though its lead content may be potentially hazardous if ingested.
www.siennapacific.com - January is Glaucoma Awareness Month. Learn and spread the word about this disease that if not treated on time can cause blindness. Wear Green to support the cause. Raise awareness with Green Ribbon Pins and Green Silicone Wristbands.
The selection of your jewellery will depend on your personal choice; however, there are some differences between white and yellow gold knowing which will help you select the better as per your needs and requirements.
Thats Riht Its Time For The Weekly Night Owl Auction!! Tonight I will Also Be Taking Bids For Lina O's Mystery Boxes Throughout The Whole Auction! Auction Starts At 10:30pm EST.
AUCTION LINK: https://www.anymeeting.com/242-750-392
www.siennapacific.com - January is Glaucoma Awareness Month. Learn and spread the word about this disease that if not treated on time can cause blindness. Wear Green to support the cause. Raise awareness with Green Ribbon Pins and Green Silicone Wristbands.
The selection of your jewellery will depend on your personal choice; however, there are some differences between white and yellow gold knowing which will help you select the better as per your needs and requirements.
Thats Riht Its Time For The Weekly Night Owl Auction!! Tonight I will Also Be Taking Bids For Lina O's Mystery Boxes Throughout The Whole Auction! Auction Starts At 10:30pm EST.
AUCTION LINK: https://www.anymeeting.com/242-750-392
Glass as building material covered all the glasses with best and suitable examples
Please like share and subscribe to my Youtube channel
https://www.youtube.com/channel/UCaUEYWPKaJItDDLpc-ZOl4w
These thusmewhat fragile however so beautiful gems ar distinctive among the gemstones. I even have taken rough material, cut and polished several opals. I cannot count the amount of mineral stones I even have set into jewellery. I do love opals nickname.
Im this presentation we are discussing about glass as the material of construction sites how important material it is. Definition of Glass and its types and properties of the Glass.
Quartz is found in almost every geological environment. It is a common constituent in most of the rock types and soil groups. Granite, sandstone, limestone, and most of the igneous, sedimentary, and metamorphic rocks contain quartz. Quartz contains mainly oxygen and silicon. These two constituents make upto 75 % of the earth’s crust. An alternate name for the Quartz Group is the Silica Group.
Glass, a translucent marvel, is a solid material crafted from silica, soda ash, and limestone. Renowned for its transparency, it serves as a vessel for both artistic expression and practical utility. Whether in architecture, décor, or everyday containers, glass's unique properties of transparency and malleability make it an indispensable element of our modern world. Celebrating its versatility, glass stands as a testament to human creativity and innovation, shaping our surroundings with its clear and enduring presence.
Glass evidence can be found at many crime scenes.
Automobile accident sites may be littered with broken headlight or windshield glass.
The site of a store break-in may contain shards of window glass with fibers or blood on them.
If shots are fired into a window, the sequence and direction of the bullets can often be determined by examining the glass.
Minute particles of glass may be transferred to a suspect’s shoes or clothing and can provide a source of trace evidence linking a suspect to a crime.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Glass as building material covered all the glasses with best and suitable examples
Please like share and subscribe to my Youtube channel
https://www.youtube.com/channel/UCaUEYWPKaJItDDLpc-ZOl4w
These thusmewhat fragile however so beautiful gems ar distinctive among the gemstones. I even have taken rough material, cut and polished several opals. I cannot count the amount of mineral stones I even have set into jewellery. I do love opals nickname.
Im this presentation we are discussing about glass as the material of construction sites how important material it is. Definition of Glass and its types and properties of the Glass.
Quartz is found in almost every geological environment. It is a common constituent in most of the rock types and soil groups. Granite, sandstone, limestone, and most of the igneous, sedimentary, and metamorphic rocks contain quartz. Quartz contains mainly oxygen and silicon. These two constituents make upto 75 % of the earth’s crust. An alternate name for the Quartz Group is the Silica Group.
Glass, a translucent marvel, is a solid material crafted from silica, soda ash, and limestone. Renowned for its transparency, it serves as a vessel for both artistic expression and practical utility. Whether in architecture, décor, or everyday containers, glass's unique properties of transparency and malleability make it an indispensable element of our modern world. Celebrating its versatility, glass stands as a testament to human creativity and innovation, shaping our surroundings with its clear and enduring presence.
Glass evidence can be found at many crime scenes.
Automobile accident sites may be littered with broken headlight or windshield glass.
The site of a store break-in may contain shards of window glass with fibers or blood on them.
If shots are fired into a window, the sequence and direction of the bullets can often be determined by examining the glass.
Minute particles of glass may be transferred to a suspect’s shoes or clothing and can provide a source of trace evidence linking a suspect to a crime.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
![Glass and Crystal<br />There are all kinds of glass we see or use in every day life. We are so familiar with them that little attention is paid on them. Never the less, one must be deeply impressed by sparking wine glasses or brilliant chandeliers. These are made from crystal: a special type of glass.<br /> Crystal is a high quality, clear and colorless glass with high lead content. Ordinary glass mainly contains 60%-75% of silicon dioxide, 12%-18% of sodium compound and 5%-12% of calcium oxide. Crystal mainly contains 54%-65% of silicon dioxide, 18%-38% of lead oxide, 13%-15% of sodium or potassium. The international standard of crystal is 24% of lead content. <br />The presence of lead changes the density, viscosity, softening temperature and refractive index. Firstly, crystal is heavier, denser than glass. Secondly, crystal has a lower softening temperature. Its working temperature range is 600-800 degree Celsius. Glass is up to 1100 degree Celsius. In addition, crystal is about 100 times less viscous than glass at working point. This makes crystal much easier to be shaped and manipulated. The most important difference is that crystal has a higher refractive index than glass. Ordinary glass has a refractive index of n=1.5, while crystal’s refractive index is 1.7. This index measures the degree to which a medium separates light into its component spectra. So crystal can refract light into rainbow colors. This is why crystal looks brilliant and sparkling. <br />Because of the beautiful nature, crystal is mostly used for making jewelries, sculptures, miniatures, chandeliers and Christmas ornaments. It can also be used for drinking glasses and serving dishes. However, its high lead content may potentially poisons. <br />Crystal and glass may sometimes look similar, however, they have different features. I did many readings and researching. I think this topic is very interesting. It is a good experience and I enjoyed on it. <br />THANK YOU<br />Bibliography:<br />,[object Object]](https://image.slidesharecdn.com/glassandcrystal-100330195423-phpapp01/85/Glass-And-Crystal-1-320.jpg)
