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Technology
The practical application of knowledge, especially in a particular area, is called technology. Advances in technology affect every area of our lives. This category is for questions about technology and includes everything from how to remove a scratch from a CD to applications of electronics to what polyester is made from and more.
35,090 Questions
The units of density are a ratio of what two quantities?
Density is a measure of how much mass is contained in a given volume. It is a ratio of mass to volume, typically expressed in units such as grams per cubic centimeter (g/cm^3) or kilograms per cubic meter (kg/m^3).
What are examples of physical technology?
examples of physical technology are anything that interacts with the physical form and function of a living thing. so likes drugs or anything that physically changes someone or something or device
Can you Convert SCFM to inches of water?
Standard cubic feet per minute in regards to water can be converted to inches. What you will do is first calculate the cubic feet. Next, convert the cubic feet into cubic inches by using the standard measurement of 1 cubic foot being 1,728 cubic inches.
What are the advancements of medicine and technology in renaissance era?
During the Renaissance era, there were advancements in anatomical understanding, with pioneers like Andreas Vesalius challenging Galen's teachings. Medical schools were established to train physicians. Technological advancements included the invention of the compound microscope by Zacharias Janssen and the development of various surgical tools.
What is the primary use for Bastnaesite a Rare EARTH other than crystal formed Gemstones?
Bastnaesite is a mineral composed of 75% rare earth oxide minerals. The rare earth minerals often make up the following proportions of Bastaenite z Cerium 50.0% z Lanthanum 34.0% z Neodymium 11.0% z Praseodymium 4.0% z Samarium 0.5% z Gadolinium 0.2% z Europium 0.1% z Others 0.2% USES z Cerium used in ultraviolet absorbing glass and lighter flints. z Lanthanum, samarium and gadolinium used for infrared absorption in glass, improving the refractive index of glass and microwave oven temperature controls.
z Neodymium used to absorb ultraviolet light and with cerium to decolor glass.
z Praseodymium used as a coloring agent in glass when the index of refraction must not change.
z Europium used extensively for the red phosphor in television tubes.
In chemistry, an element is a substance made up of only one type of atom, characterized by its unique number of protons in the nucleus. Elements are organized in the periodic table according to their atomic number, electron configuration, and chemical properties.
In the SI (International System of Units) system of measurement, the base unit for measuring length is the meter (symbol "m").
If you jerk a piece of paper from under a book quickly the book will not movewhy?
This is due to the property of static inertia.
When measuring voltage how should test probes be connected?
First connect the positive terminal of the voltage line to positive terminal of multimeter and negative to negative terminal of multimeter. Select voltage in multimeter and measure the voltage
What is the worlds strongest fiber?
The strongest synthetic fiber is carbon nanotubes.
The strongest organic fiber is spider silk. Both are stronger than silk, but I don't know if the nanotubes or spider silk is stronger.
Zylon®, the world's strongest fiber, contradicts almost everything we know about fibers and fabrics. Zylon is made by mixing a polymer called PBO (para-phenylene benzobisoxazole), while forcing it through a spinning machine.
What was the first piece of technology ever made?
The first piece of technology ever made is often considered to be the stone tools crafted by early humans around 2.5 million years ago. These tools were used for various purposes such as hunting, cutting, and digging, marking a significant advancement in early human development.
What types of energy is used to run a clock?
Clocks can be powered by a variety of energy sources, such as batteries, electricity, mechanical springs, or solar power. The specific type of energy used depends on the design and mechanism of the clock.
Many power tools generate harmful levels of noise true or false?
True. Many power tools, such as drills, saws, and grinders, generate noise levels that can be harmful to hearing if proper protection is not worn. It is important to always use ear protection when operating loud power tools to prevent hearing damage.
What is the relationship between bulk density and porosity?
A value for porosity can alternatively be calculated from the bulk density ρbulk and particle density ρparticle:
Normal particle density is assumed to be approximately 2.65 g/cm3, although a better estimation can be obtained by examining the lithology of the particles.
Yes, there may be a disconnect switch near the air conditioner unit in the attic that needs to be checked and potentially reset. Look for a switch similar to a circuit breaker near the unit and ensure it is in the "on" position. If this does not resolve the issue, consult a professional HVAC technician to diagnose and repair the problem.
A signal is attenuated in direct proportion to what factor?
Depends on what kind of modulation you're using. If frequencies, then it would be in wavelength or hertz; if amplitude, it would be in power or wattage.
What is the chemical to clean black dollars?
There is no chemical that can clean black dollars. This is a common scam where fraudsters claim to have a special solution that can clean stained banknotes. It is best to avoid any offers related to cleaning black money as they are usually illegal and fraudulent.
You never touch a capacitor without?
Discharging it first. Capacitors can store electrical energy even when disconnected from a power source, posing a risk of shock. To discharge a capacitor, use a resistor to create a path for the stored electricity to dissipate safely.
What are probable causes of floating sludge in a clarifier?
Probable causes of floating sludge in a clarifier include high organic loading or high levels of fats, oils, and grease in the influent wastewater, improper sludge thickening or removal mechanisms, and inadequate mixing or aeration in the clarifier tank leading to poor solid-liquid separation.
What is meant by the word quantized?
Quantization (signal processing) is the process of approximating a continuous range of values (or a very large set of possible discrete values) by a relatively small ("finite") set of discrete symbols or often integer values.
For example, rounding a real number in the interval [0,100] to an integer 0,1,..100.
For other contexts see the added link from Wikipedia.
Additional answer: The science of quantum mechanics tells us that all forms of matter, energy, space, and time are quantized, by which is meant that they exist in the form of quanta, which are little pieces or amounts which are the smallest size that is possible in our universe, so while you can have one quantum of energy, you can't have half a quantum of energy; the quanta are not sub-divisible. The universe is very fine grained, but it is nonetheless grainy.
Some common types of fireworks include aerial shells that burst in the air, roman candles that shoot multiple fireballs, and fountains that emit sparks and colored flames.
In mathematics, "orthogonal" means perpendicular or independent. In linear algebra, vectors are orthogonal if their dot product is zero, indicating they are at right angles to each other. In statistics, orthogonal variables are uncorrelated, making them useful for multi-variable analysis.
