L'automne ou la saison de la lumière bleue
Le changement d’heures, les vacances de la Toussaint, les jours qui raccourcissent sont autant de signes pour annoncer la saison de la lumière bleue.
Nous rentrons du travail, les enfants de l'école, il est 17 heures, le soleil se couche déjà, la nuit approche. Contrairement aux longues soirées d'été passées à l'extérieur, l'automne et l'hiver nous renvoient à l'intérieur de nos maisons en tête à tête avec nos différents écrans, sources...
Black Friday: when to buy the best blue light blocking glasses
the Black-Friday where the Black Friday , this custom that comes to us from the Americas makes its big comeback at the end of November as every year. This year, this day of exceptional promotions will take place on Friday November 26, 2021 and will last until Sunday December 28 inclusive.
Le Cyber monday : qu'est-ce que c’est ? Un peu d'histoire...
Le lundi 28 novembre 2022 ce sera le Cyber Monday ! Pourtant, aujourd’hui, c’est le Black Friday ! Mais quelle est la différence ?
Ce terme est seulement apparu en 2005, il s'agit du lundi qui succède la Thanksgiving et le Black Friday. A la différence du Black Friday où les achats peuvent s’effectuer dans les magasins physiques comme en ligne,
Semi-rimless glasses or Nylor glasses, what are they?
Semi-rimless glasses are frames whose strapping does not completely surround the lens, it is held by a robust nylon thread either on the top of the frame or more generally on the bottom of it. We can say that they are hybrid frames since they combine the minimalist design of rimless glasses and the style of rimless glasses. These semi-rimless glasses are available in metal, titanium or acetate and in different shapes and sizes.
WHAT IS PRESBYOPIA AND WHEN TO WEAR GLASSES
You are over 40 years old, and maybe you noticed that when you read a newspaper, a book or your phone, you had some difficulty distinguishing the letters clearly? This is due to the appearance of a vision disorder . More precisely the presbyopia !
To be sure, it's very simple!
Titanium has been a material increasingly used in the world of optical industry since the 1980s. Titanium glasses appeared in France around 1986 when they were already widespread in Japan .
Origin and manufacture of titanium:
Discovered in 1791 by the British William Gregor, the first use of titanium dates back to the beginning of the 20th century, as an additive to cast iron and steel, in the form of ferro-titanium. It is the 22nd element of the periodic table, it has the symbol Ti. It is a stable element that belongs to the family of transition metals such as silver, cadmium...
What is Beta-titanium?
the beta-titanium is a pure titanium alloy . It is a metal made of titanium and other chemical elements. There are several alloys. The most common are composed of 75% titanium, vanadium and aluminum or titanium and nickel such as Flexon, an alloy used by Marchon for the manufacture of certain Calvin Klein glasses or by the Titanium Flex brand with high-end models. colors.
In this form it is more...