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Digital Cameras
Digital photography has grown exponentially in the 21st century, making film cameras nearly obsolete. Ask questions here about digital camera brands, functions and prices here.
4,826 Questions
A mega earthquake is an extremely powerful earthquake, typically with a magnitude of 9.0 or higher on the Richter scale. These rare but catastrophic events can cause widespread destruction, tsunamis, and loss of life in the affected area.
NASA plans to launch a spaceship that will photograph your Milky Way Galaxy from beyond its halo?
That sounds like an exciting mission! The images captured from beyond the halo of the Milky Way Galaxy could provide valuable insights into its structure, composition, and evolution. This data could help scientists better understand our place in the universe.
How did x-ray photographs help Watson and crick determine the structure of DNA?
X-ray photographs taken by Rosalind Franklin provided key information about the structure of DNA, suggesting a helical shape with a repeating pattern. Watson and Crick used this data to build a model of the DNA molecule, leading to their discovery of the double helix structure. Franklin's work was crucial in providing the evidence necessary for Watson and Crick to propose their groundbreaking model.
What is the voltage of energizer lithium batteries?
Energizer (and many other battery companies) sell two kinds of "lithium" batteries:
"Lithium Photo/Coin", Li-Mn, "CR" button cells, such as the CR2032, provide about 3 V.
"Lithium cylindrical", "Lithium-iron", "Li/Fe", which comes in AA and AAA, are about 1.5 V, and also comes as those rectangular 9V batteries, which... of course... are about 9V.
Will a 3.6V battery replace a 3.7V battery on cameras?
It is not recommended to replace a 3.7V battery with a 3.6V battery in a camera as the slight difference in voltage may affect the camera's performance and potentially cause damage. It is best to use the battery specified by the manufacturer to ensure proper functioning and safety of the camera.
Parallax bar is a device used in surveying to measure the horizontal distance between two points by creating a visual displacement of a point viewed through a telescope on a graduated rod. This displacement is used to calculate the distance based on the principle of parallax. It is commonly used in topographic mapping and land surveying.
What does the aperture on a microscope do?
The aperture on a microscope controls the amount of light entering the objective lens. By adjusting the aperture size, you can regulate the brightness and contrast of the specimen being viewed. This can help in improving the clarity and visibility of the specimen under observation.
Maps differ photographs in many significant ways including?
Maps differ from photographs in many significant ways, including the use of imaginary lines or boundaries.
Yes, iridium is a shiny, silvery-white metal known for its high resistance to corrosion. It has a high melting point and is often used in various industrial applications, including in spark plugs and as a hardening agent in platinum alloys.
Do all brands of bubble make the same size bubble?
No, not all brands of bubble gum make the same size bubble. Factors such as the ingredients used, the texture of the gum, and the size of the piece can all influence the size of the bubble that can be blown.
What are the advantages and disadvantages of a CCTV camera?
The advantages of CCTV cameras are that they are kept everywhere. So if a crime is committed the culprit will be eventually caught.
Disadvantages are that they are costly, do not always work(as they are not set up in the right places) and manipulate with people's privacy.
Potential advantages.
The advantages of CCTV cameras are that they are kept everywhere. So if a crime is committed the culprit will be eventually caught.One of the immediately obvious advantages is that the unit is no subject to the failure of any type of wiring. The cameras make use of wireless technology to accomplish the task at hand. This absence of wiring that could fail or be cut means there is much less chance of something going wrong with the unit, or that a clever thief can circumvent the system by severing the connection. Short of ripping the entire camera out of place, there is not much that will slow the unit down.
Another advantage has to do with the clarity of the images that are captured. Most of these wireless units have a high-resolution image that makes it very easy to identify faces and other physical characteristics. This makes the cameras ideal for use as part of the security for research facilities and other establishments. Security personnel can easily monitor all activities within range of the cameras, and clearly note any suspicious or unauthorized behaviour, while getting a clear image of the person engaged in the activities.
Recording is another advantage of these wireless cameras. In times past, storing recordings could be quite a task. From magnetic tape to VHS tapes, storage could become quite a problem. Many of the units on the market today make use of CDR technology, making it possible to store more hours of surveillance on a single disk. This can be crucial for law enforcement officials, as well as persons who are responsible for conducting security in office buildings and manufacturing facilities.
Another advantage of these newer models of wireless surveillance units is that they are usually less expensive than most people would think. In fact, it is possible to purchase these types of cameras at a significantly less amount per unit than many of the wired counterparts on the market today. Coupled with the fact that wireless units make for much easier installation, it should come as no wonder that more and more people are choosing to go wireless for their security camera needs.
Potential disadvantages
The following are some of the potential weaknesses of IP cameras in comparison to other CCTV cameras.
· Disadvantages are that they are costly, do not always work(as they are not set up in the right places) and manipulate with people's privacy.
- Higher initial cost per camera.[citation needed]
- Fewer choices of manufacturers.[citation needed]
- Lack of standards. Different IP cameras may encode video differently or use a different programming interface. This means a particular camera model should be deployed only with compatible IP video recording solutions.[citation needed]
- Technical barrier. Installation for IP camera required a series of complicated network setting including IP address, DDNS, router setting and port forwarding.[citation needed] This is very difficult for most users to do without help from an IT technician.
- Lower dynamic range - i.e. reduced ability to cope with low light and high contrast scenes.[citation needed]
Vulnerable to hacking, and hoaxing via internet (numerous instances of false bomb threats being called in as hoaxers watch on web); criminals can hack into a facility's CCTV system to observe security measures and personnel, thereby facilitating criminal acts and proving the IP technology to be counterproductive
Is an alkaline the same as lr6 nimh battery?
No, alkaline batteries are "primary" cells*, and cannot be recharged. NiMH (Nickel-Metal Hydride) are "secondary" cells*, and can be recharged several hundred times. If you have a camera that takes available NiMH cells, they not only save money in the long run, but they perform much better in cameras than alkalines, which have less than 1/2 the life (and then you throw them away) of a NiMH (which you can re-use). I use Sanyo Eneloops, and am totally satisfied with them. They do not hold as much energy as the "high energy" cells, but they don't discharge in the camera in a month, either. I also like the charger that comes with them, which is one of the few inexpensive ones I've seen that will charge a single cell at a time.
*Don't ask me. That's just what they're called.
How does science relate to Photography?
Photography relies on principles of light, optics, and technology determined through scientific research and understanding. Concepts such as exposure, focal length, and depth of field are all based on scientific principles. Advances in science have also driven the development of camera technology, leading to improvements in image quality and usability.
Silver iodide (AgI) is an ionic compound with strong attractions between oppositely charged ions, resulting in a higher melting point. Vanillin (C8H8O3) is a covalent compound with weaker intermolecular forces, leading to a lower melting point. Ionic compounds typically have higher melting points compared to covalent compounds due to their stronger bonding interactions.
How many pixels to one centimeter?
Some other usefull prefixes are:
Pico - trillionth
nano - billionth
micro - millionth
milli - thousandth
centi - hundreth
deci - tenth
deca - ten
hecto - hundred
kilo - thousand
mega - million
giga - billion
tera - trilionth
ITS ACTULLY 100CM!!!!!! WHO EVER PUT 1000CM IS A SPASTIC!!!!!!!!!
What animal uses a pinhole photography to see?
The nautilus is the animal that uses a pinhole-type eye structure for vision. This primitive eye design helps the nautilus sense light and detect predators in its ocean habitat.
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.
Can you use NiCD battery in place of NiMH battery?
Yes, as long as you use an NiCd charger, but you really shouldn't. NiMh has twice the capacity of NiCd and it is less expensive. NiMh also contains no toxic materials so it is better for the environment.
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.
Describe a time when you came up with a new idea?
Many interviewers ask questions about past experience, new ideas you have had, and problem solving skills. They ask these questions to find out about the person and if they would be a good fit for the company. Answers should be concise and honest as they highlight your skills.
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.
What does rr mean eg fireblade rr?
In this context, "rr" typically stands for "race replica," indicating that the product is a replica of a vehicle used in racing, with high-performance features and design elements inspired by racing models. So, "Fireblade RR" would refer to a model of a motorcycle that is a race replica of a high-performance racing bike in the Fireblade series.
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.
