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I am a retired 74 year old electrician, plumber,& hvac mechanic. This is not a one answer question. I helped my dad wire houses when I was 12 years old. This is an easy question to answer. Polarized plugs actually came out in 1914. They were never well accepted, so, here is what I can tell you. If you have an old lamp pay more attention to the cord and the socket. When polarized plugs and the pole plugs finally became acceptable to the public, the electric companies made three prong adapters available. Simply because, most homes only had two prong receptacles. So that people merely cut off the plug and replaced it with a two prong plug, so, you are finding Bakelite plugs with no cover cap on them. Here is what to look for. To date your lamp or appliance. Asbestos or cloth covered cords ended in the early 50's. Bakelite plugs ended about the same time, then we grew into the molded cords. If your cord is stiff composite of rubber and plastic it ended in the mid 50's. If it is a clear wire it ended in the 60's. Also look at your socket. If it is porcelain it could have ended in the 40's or 50's as well as many of them being Bakelite. I can't continue beyond that because at that point repros are being made and we are not interested at this point in modern lighting's another thing to look at in your old light, does it have a ground wire? if it does it is mid 20th century and not antique.
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How can you obtain circularly polarized light from linearly polarized light?
Circularly polarized light can be obtained from linearly polarized light by passing it through a quarter-wave plate. This plate delays one of the orthogonal components of the linearly polarized light by a quarter of a wavelength, leading to a phase shift that results in circular polarization.
Do all light bulbs produce polarized light?
No, not all light bulbs produce polarized light. The polarization of light depends on the source of light and its characteristics. LED and fluorescent light bulbs can produce polarized light, while incandescent bulbs generally do not produce polarized light.
How can sunlight be polarized?
Sunlight can become polarized when it interacts with the Earth's atmosphere, such as through scattering or reflection off surfaces. This causes the light waves to align in a specific orientation, creating polarization. Specialized filters, like polarized sunglasses, can then block out this polarized light to reduce glare.
Can ultrasonic waves be polarized?
No, ultrasonic waves cannot be polarized because they are mechanical waves that propagate through a medium by vibration and compression, unlike electromagnetic waves which can be polarized due to their transverse nature.
Is phospholipids are polarized molecules?
no
Are all ray bans polarized?
No, not all Ray-Ban sunglasses come with polarized lenses. Ray-Ban offers a range of sunglass options, including both polarized and non-polarized models. Customers can choose the type of lens that best fits their needs and preferences.
Are the oakley flak jackets polarized?
Not all pairs are. You have to buy Polarized lenses for them to be polarized.
Is an SCR polarized?
is s.c.r polarized
Can a laser be polarized?
Yes, they are almost always polarized.
When was Kaenon Polarized created?
Kaenon Polarized was created in 2001.
Light that has passed through a polarizing filter is called?
polarized light
What are GPL lenses are they polarized?
In reference to Ray-Ban sunglasses, their GPL lenses are polarized. The GPL stands for Glass Polarized Lens.
What is light passed through a polarized filter?
Such light is said to be polarized.
What is the difference between polarized and non polarized?
the existence of a dipole moment.
Are g15 xlt lenses polarized?
No. Polarized cost about $100 more.
Do E3 spark plugs come pregapped?
Yes they already come pregapped.
Do capacitors have positive and negative?
Some capacitors have terminals as they are polarized but some have not as they are not polarized. you can easily identify a polarized capacitor as it has + or - terminal indication marked.
