Field notebooks are used by researchers to record observations, measurements, and other relevant information while in the field. They can be owned by the author or the employer, and are often hardcover and water-resistant. They are also used by amateurs, such as birdwatchers, and can provide valuable information for future studies. Standardized field notebooks can […]
Field operator jobs are common in the energy sector, particularly in oil and gas drilling, with varying levels of seniority and tasks. They may involve heavy lifting and travel to remote sites to monitor drilling activity and equipment. Field operators must be familiar with gauges, verify oil and gas access, and coordinate cleaning of contaminated […]
Becoming a field naturalist requires a bachelor’s degree and postgraduate study for more job opportunities. High school students can take extra science classes and consider local college courses. Majoring in biology, forestry, or a related field in college is helpful, as well as looking for internship opportunities. Graduate degrees may be necessary for high-level jobs. […]
Gravity is the force of attraction between masses, with larger masses having a greater effect. It accelerates objects towards it, gives weight to everything, and keeps objects in their orbits. The closer objects are, the stronger the gravitational field, which decreases rapidly with distance. The force of gravity follows an inverse quadratic relationship. Gravity is […]
Web browsers don’t need “http://” and the use of “www.” depends on the DNS record. DNS maps website names to IP addresses, allowing communication between computers. Some DNS records include an alias for the “www.” prefix. DNS records can be modified to capture all traffic. Current versions of popular web browsers do not require http:// […]
An electric field is the influence of an electrically charged object on other charged bodies. The field is infinite but decreases with distance according to the inverse square law. The field’s direction and magnitude depend on the type of charge. The force experienced by a charged object in an electric field can be calculated using […]
Electromagnetic fields surround charged objects and interact with charged particles. They vary in strength and are determined by wavelengths and frequency. They can be generated by voltage and changes in electric or magnetic fields. The electromagnetic spectrum ranges from radio waves to gamma rays, with visible light being of particular interest. Some EMFs have been […]
The Earth’s magnetic field varies in strength depending on location, with regions near the poles having a stronger field. The magnetosphere affects the solar wind’s trajectory and the field’s total energy is large. The field’s orientation is reflected in cooled magma, which shows it flips every 250,000 years. The earth’s magnetic field varies depending on […]
Key fields in a database uniquely identify entries and enforce integrity across tables. They must be unique, unalterable, and required. Simple and compound keys are used, with composite keys reducing the chance of multiple records. Primary keys are used in original tables, foreign keys link tables together. A key field is a column or combination […]
Field geologists study the Earth and its history, as well as natural occurrences like landslides and volcanoes. To become a field geologist, one must study physical and natural sciences in high school, take geology-based courses in college, and gain hands-on experience through internships and field work. Possible career paths include working as an environmentalist or […]
Magnetic fields are invisible forces that exert a magnetic force on magnetism-sensitive substances. They are created by electric currents and have many properties used in scientific research, medicine, and everyday life. Magnetic fields vary in strength and type, with examples including the Earth’s magnetic field and those created by electromagnets. A magnetic field is an […]
A field superintendent coordinates and supervises construction projects, manages subcontractors, orders supplies, and ensures compliance with safety regulations. A bachelor’s degree in engineering may be required. They liaise between the general contractor and subcontractors and oversee project timelines. They are responsible for ensuring safety compliance and must communicate effectively with all stakeholders. A field superintendent […]
Field examiners conduct inspections for government agencies or private companies, verifying information and preparing reports. They work in various industries, including insurance, medical, accounting, and security, and can represent the public interest in investigating security breaches, fraud, and other incidents. A field examiner conducts inspections at multiple sites on behalf of a government agency or […]
Crystal field theory explains the energetic properties of transition metal compounds, including color and texture, but cannot describe their bonds. Developed in the 1930s, it was combined with ligand field theory to better understand bonding. The theory describes the interaction between metal and non-metal atoms, and the stable energy fields they generate. It is particularly […]
Vector fields assign vectors to points in space and time, with two types being velocity and force fields. Vectors are used to model speed and force, and many make up a vector field. Line and area integrals can be calculated, and conservative vector fields represent a slope or gradient. A vector field is a function […]
Magnetic field strength affects charged particles passing through it, and can be used to power electric motors and analyze materials. The right-hand rule can determine the direction of the magnetic field. Magnetic fields can be used in the lab to identify materials and in particle accelerators for high-energy collisions. Magnetic field strength is the effect […]
An electrostatic field surrounds charged particles and can exert a force on other charged objects. It is measured in newton per coulomb and symbolized as “E”. The direction of the field indicates the direction of the force it exerts on a positive charge. Gauss’ law is a method for calculating electrostatic fields. An electrostatic field […]
A field microscope is a portable, small, and lightweight compound light microscope with a long focal length objective lens. It can be configured for brightfield, darkfield, and phase contrast microscopy and can be monocular or binocular. Field microscopes are used by professionals in various fields and vary in price. A field microscope is a small […]
Blind mathematicians excel in geometry and topology due to their ability to represent objects in multiple dimensions without visual perception. Famous blind mathematicians include Euler, Saunderson, and Pontryagin, who worked intuitively in their heads. According to the American Mathematical Society, most blind mathematicians work in geometry, which is considered the more visual mathematical discipline. The […]
A field naturalist studies the natural world and educates others about it, often specializing in a certain area such as insects or plants. They may have a master’s degree or gained knowledge through experience. They work as environmental educators, inspiring people to care for the natural world and may address specific issues in a particular […]
