What is infrared frequency? Infrared radiation (IR radiation for short) describes electromagnetic waves in the spectral range between visible red light and longer-wave microwave radiation (also known as terahertz radiation). Infrared (IR) has wavelengths λ between 780 nm and 1 mm, which corresponds to a frequency range from 300 GHz to 400 THz. What blocks […]
Do criminal investigators get paid well?
Do criminal investigators get paid well? The median wage in 2020 for Detectives and Criminal Investigators in California was $104,428 annually, or $50.21 hourly. The median wage for Detectives and Criminal Investigators in Kings County was $82,271 annually, or $39.55 hourly. The median is the point at which half of the workers earn more and […]
Why does gravity not pull us through the floor?
Why does gravity not pull us through the floor? When two ordinary objects, such as your shoes and the floor on which you stand, come close enough together, the electrons that surround the atoms of the floor and of your shoes repel each other strongly through the electic force (the so-called Coulomb force). But, not […]
What is the resolving power of a compound microscope?
What is the resolving power of a compound microscope? The resolving power is the capacity of an instrument to resolve two points that are close together. The resolving power of a compound microscope is 0.25μm. How do you increase the magnification of a compound microscope? In order to increase the magnifying power of a compound… […]
What is egg drop experiment?
What is egg drop experiment? The Classic “Egg-Drop” experiment has been a standard in science instruction for many years. Essentially, students are asked to construct some type of container that will keep a raw egg from cracking when dropped from ever-increasing elevations. What happens during an egg drop? While at rest, the egg has potential […]
How does a projectile launcher work?
How does a projectile launcher work? Launcher The Projectile Launcher is used to investigate important concepts in two- dimensional kinematics. A steel ball placed in the launch barrel can be projected for different launch velocities and launch angles. Upon setting the desired angle and range, the hand pump is then used to pressurize the system. […]
What are the three main parts of a sheathed cable?
What are the three main parts of a sheathed cable? Cables consist of three major components: conductors, insulation, protective jacket. What is the plastic part around a copper wire? Most electrical wire is covered in a rubber or plastic coating called insulation. Why is plastic used to cover copper wires? Electricity is very dangerous and […]
What are the 5 types of minerals?
What are the 5 types of minerals? Types of minerals Native elements. eg. Gold, Silver, Mercury, graphite, diamond. Oxides. eg corundum (incl. sapphire), hematite, spinel. Hydroxides. eg. Goethite, brucite. Sulfides. eg. Pyrite, galena, sphalerite. Sulfates. eg. Baryte, gypsum. Carbonates. eg. Calcite, magnesite, dolomite. Phosphates. eg. Apatite, monazite. Halides. eg. What is the most valuable mineral? […]
Can you levitate a person with magnets?
Can you levitate a person with magnets? Normal things, even humans, can levitate if they are placed in a strong magnetic field. Such materials can be levitated using magnetic fields of about 10 Tesla. Can you fly with magnets? So the short answer is that a magnetized material is considered a hazardous material and is […]
What is nitrogen fixation definition?
What is nitrogen fixation definition? Nitrogen fixation is the process by which atmospheric nitrogen is converted by either a natural or an industrial means to a form of nitrogen such as ammonia. In nature, most nitrogen is harvested from the atmosphere by microorganisms to form ammonia, nitrites, and nitrates that can be used by plants. […]