Nonpolar molecules have a symmetrical distribution of charge, resulting in no significant difference in electronegativity between atoms. Examples of nonpolar molecules include hydrocarbons like methane (CH4), carbon dioxide (CO2), and diatomic gases like oxygen (O2) and nitrogen (N2).
When were telescopes used to see and to photograph the planets Neptune Uranus and Pluto?
Saturn was the outermost planet known until William Herschel discovered Uranus in the late 18th Century, so unless you count this as ancient, it would be inaccurate to say that the ancients could 'see' the planets beyond Saturn.
Telescopes are first definitely attested in the early 17th Century. Photography in the modern sense (using a camera to record sharp images on a light-sensitive film, as opposed to more basic forms like the pinhole camera) didn't exist until the early 19th Century.
I'm guessing that your question arises from the (quite sensible) assumption that all of the planets were named by the ancients, but this is not the case. The 'trans-Saturnian' (if you'll pardon the term) planets were named after Greek and Roman deities by later astronomers.
Interestingly, Uranus and Pluto are named after Greek gods, rather than the Roman gods that give the other planets their names. I suppose that 'Caelus' and 'Dis Pater' didn't quite have the same ring to them.
Hope this helps.
Abstract photography are taken of very dramatic images. It relies on more sense of form, color, and flow than it does on detail. Abstract photography minimalism digital and film photography of places and things from a different perspective.
What is oblique aerial photograph?
An oblique aerial photograph is a type of photograph taken from an aircraft at an angle, rather than directly overhead. This perspective allows for more detailed views of objects and landscapes, making them useful for mapping, surveillance, and other applications.
How is water a polar molecule?
Water is a polar molecule because it has a bent shape with oxygen being more electronegative than hydrogen, creating an uneven distribution of charge. This results in a partial negative charge on the oxygen atom and partial positive charges on the hydrogen atoms, making water a polar molecule.
Water molecules are polar with the?
oxygen atom being slightly negative and the hydrogen atoms being slightly positive. This polarity allows water molecules to form hydrogen bonds with each other, giving water its unique properties such as high cohesion, adhesion, and surface tension.
What are the long term effects of placental abruption on the mother?
I have had two boys via emergency caesarian due to placental abruption. For my first child, both of us were very lucky to survive, he was in special care baby unit for three weeks and i had to have blood transfusions, my uterus did not contract properly after delivery and my blood was not clotting. I had a priest come to see me and also wanted to see my son. It was very scary and the thought of me losing my son was unbearable. I have blocked out most of that time and tend to focus on the future. I also had a second child and was high risk. I had a caesarian planned for 5th may as i was high risk but went into labour on 2nd may. In third stages of labour i suffered a placental abruption but this time round i knew what was happening and my boy was in distress. Everything came flooding back and i was hysterical as i didnt want to lose him. Luckily after emergency caesarian he was okay no stay in the special care baby unit but i was borderline for a blood transfusion and they decided against it. This resulted in me being severely anaemic and very ill for a week or so after the birth.
The long term effects are really mental rather than physical. I have since found out that i have an iron deficiency which contributed to why this happened to me. I stay focused on the future and not on the past and count my blessings that both of my boys and me survived as there are so many cases where this doesnt happen. Neither of my childbirths hold pleasant memories but the memories we have built thereafter are brilliant ones and i wouldn't wish it any other way.
What causes water to be a polar molecule?
Water is a polar molecule because of its bent shape and the unequal sharing of electrons between oxygen and hydrogen atoms. The oxygen atom attracts electrons more strongly, leading to a slightly negative charge near the oxygen and slightly positive charges near the hydrogens.
What elements are used in photography?
Elements used in photography include lighting, composition, framing, perspective, color, texture, and contrast. These elements are manipulated by the photographer to create visually appealing and interesting images.
Why are water molecules polar?
A water molecule is polar because there is an uneven distribution of electrons between the oxygen and hydrogen atoms
AnswerA water molecule is polar because there is an uneven distribution of electrons between the oxygen and hydrogen atoms. The negative pole is near the oxygen atom and the positive pole is between the hydrogen atoms.
How can you remove felt tip pen ink from the front of a photograph?
My granddaughter (age 2) drew, with a blue felt pen, all over her aunt's wedding pictures (2 of them). I tried Windex, hairspray and carpet cleaner but nothing touched it. Then I tried a non-acetone nailpolish remover. This did the trick! Worked like a charm. This took all of the ink off and didn't touch the finish (these were professional photographs). I don't know if I would attempt this on pictures straight from an ink-jet printer, though.
How is chemistry helpful in photography?
Chemistry is essential in photography for developing film and creating prints. Chemical reactions are used to expose light-sensitive materials, such as silver halide crystals in film, to create an image. Understanding the chemical principles behind these processes helps photographers control the look and quality of their photographs.
A camera lens is actually made up of many smaller lenses; from one to twelve (or more, depending on the application). A lens element is just one of the many others that is inside the camera lens. Lens Barrel: The complete camera lens that houses the many individual lens elements. It also has the mounting hardware located in the rear, which connects to the camera body.
What are some examples of polar molecules?
Water (H2O), ammonia (NH3), and hydrogen fluoride (HF) are examples of polar molecules. These molecules have an uneven distribution of electrons, resulting in a partial positive and partial negative charge on different ends of the molecule.
Why are some outlets upside down?
Are you asking about a standard USA 120 Volt domestic wall socket containing a pair of outlets, where one outlet is positioned below the other one but looks upside down? If so, here goes:
Each pair of socket outlets is made like this: a springy brass contact strip is fitted underneath the top outlet's left hole to connect it to the bottom outlet's left hole. Another springy brass contact strip is fitted underneath top outlet's right hole to connect it to the bottom outlet's right hole.
One supply wire is connected to the left-hand contact strip and the other supply wire goes to the right hand contact strip.
It doesn't actually matter which outlet hole is the hot and which is the neutral because the system allows you to put in an ungrounded plug either way round.
If there are any ground holes these are positioned above and below each pair of the contacts described above, at the mid-way point. The top outlet's 3 holes then look like one triangle and the bottom outlet's 3 holes look like another triangle that is upside down to the top one!
Another answer
The NEC does not specify what position a duplex receptacle is placed. However, some electrical plans, such as those for hospitals, may call that receptacles be placed with the ground hole facing up. This is to help prevent contact being made with the hot and neutral with something falling on a plug of a cord. The ground prong may help protect this from happening.
The other school of thought is that with the ground hole facing down on a duplex receptacle if the plug of the cord has something fall on it the last blade to disengage would be the ground pin.
Another explanation
Reason why "ground-down" is best/safer: the socket for the ground pin should be down because, if the plug starts to work its way out from weight on the cord, the first things to disconnect will be the power pins and that all-important ground pin will be the last to go, thereby providing its protection until no longer needed because the power pins have been disconnected first.
Example of amphipathic molecule?
An amphipathic molecule is a molecule that contains both polar and nonpolar regions. As the answer above said amphipathic molecules have two ends. A Hydrophilic end or a polar end, and a hydrophobic end or a non-polar end. Amphipathic molecules are extremely important in the human body. because they function as transporters of hydrophobic material in the hydrophilic environment of the body. A simple example is that lipids (fat) can not circulate the body along with blood unless it is bonded to an amphipathis molecule or else lipids will not be able to move in the vessels and will make obstructions.
Value of p3 zoom reflex bolex with case?
The only way to see the value is on Ebay. You can search previous auctions of similar cameras, or just offer it for sale, with or without a minimum. Even if you had a catalog of values, they wouldn't be current. Good luck.
Thermal images are much the same as regular images on a camera, other than the sensors used are either designed or have filters added to respond to a specific range of the light spectrum.
For instance, most of today's cameras have an infra-red filter built into them to specifically filter out the light range. However, if it's removed, it's possible to be able to take images based on the heat signature of the item being photographed. Although the sensitivity isn't the best, in most cases it'll work. ****************
Methinks the contributor doth confuse thermal with infra-red. I believe the above answer is true for digital cameras only, but such photos are not "thermal" images. Infra-red photography can also be practiced with a regular film camera, infra-red film and filters to enhance the result also. Either method requires light to be reflected from objects to the camera...a major difference.
Thermography is the rendering of images using only heat as the energy source, which is far below the capability of any light sensitive camera as far as I know. Such a camera has sensors which work whether visible light is present or not. If you can take your ordinary digital camera and render a picture outdoors at night with NO visible light whatsoever, I will eat humble pie. See this link for more on thermal imaging. http://en.wikipedia.org/wiki/Thermography
Micron
What type of zoom results in increased magnification without a change in image quality?
Optical zoom results in increased magnification without a change in image quality because it physically adjusts the lens to zoom in on an image. This is different from digital zoom which enlarges the pixels of an image resulting in reduced image quality.
What is the frequency of infrared ray?
Infrared (IR) radiation is electromagnetic radiation of a wavelength longer than that of visible light, but shorter than that of microwaves. Infrared radiation has wavelengths between about 750 nm and 1 mm. To convert wavelength to frequency, divide the speed of light by the wavelength. Speed of light is 300000000 m/s so 1mm corresponds to a frequency of 3E11 or 300GHz 750nm corresponds to a frequency of 4E14 or 400THz if I didn't drop a decimal point somewhere.
What is the speed of electricity?
The speed of an electric current is determined according to v = I/nAQ (average speed equals current divided by the number of charged particles moving, the cross-sectional area of the conductor and the charge of the particles). This basically means that a normal current e.g. the current in a house's wiring travels at about walking pace.
The magnification (MA) equals the focal length of the objective lens (fo) divided by the focal length of the eyepiece (fe), which is this: MA = fo / fe = 10 feet / .25 inches = 120 inches / .25 inches = 480 A link to the Wikipedia article on magnification is included.
How many smoke detectors on a circuit breaker?
While smoke detectors draw very little power, you can only put a certain amount on a circuit. This is determined by the manufacturer's specifications which must ALWAYS be consulted. Some manufacturers only allow 9 per a circuit, others 11, and some brands may even be more. If you were to try to put more than the designated amount on that circuit, the detectors would not work as they were designed to, and most certainly would not pass a fire inspection. If it is a large house that a system is being installed in, a low-voltage system is always the best way to go.
As a side-note, just because a given device only uses so much power, the National Electrical Code (NEC) still has guidelines that MUST be followed. A "continuous load" as defined by the NEC is something that stays on for more than 3 hours at a time - and it states that you can't load a circuit more than 80% of its capacity.
Lighting is a perfect example, so let's use light bulbs as an analogy.
A 60-watt light bulb uses .5 amps at 120 volts (60 watts divided by 120 volts is .5 amps). Therefore, on a 15 amp circuit, you would think that you're able to put 30 of these 60-watt light fixtures on a circuit, right? Actually, no.
Lighting is most certainly considered a continuous load, because you definitely leave your lights on for more than 3 hours at a time. Therefore, per the Code, that circuit can only accept 80% of its capacity because of the continuous load, leaving you with 12 amps (80% of 15). This means that you can only use 24 of those 60 watt fixtures, not 30.
Wiring is not a hobby - always hire a licensed and qualified electrician.
How does light travel through a camera?
The Lens is the image-forming device on a camera. The lens bends light rays to project an image onto a light sensitive medium, which may be any of several forms, including film, sensitized glass plate, or electronic sensor.
The Diaphragm is a variable opening which controls the quantity (brightness) of light falling on the light sensitive medium.
The Shutter controls the length of time light is permitted to fall on the light sensitive medium. It can take many forms, but usually has some method for precision adjustment of the time it is open.
Light passing through the lens, aperture, and (when open) the shutter forms an image of specific brightness for a specific duration on the light sensitive medium.
Light also passes through a viewfinder system, which may be a part of the optical system of the camera, or separate from it. In the most complex cameras, some of the light passing through the lens is diverted into a viewfinder by means of a mirror or prism. By using some of the same light passing into the camera, these systems permit the user to see essentially what the camera is seeing.
(See discussion)
How do you rewire a switch in a hallway that turns lights on and off in two bedrooms?
Are you wanting to reconfigure it to work this way, or does it currently work in this manner?
To reconfigure it, it will take quite a bit of rewiring, depending on whether the rooms are adjacent or not.
The wiring method is not terribly difficult. Getting the wires to and from the switch can be cumbersome though.