Discover the expert in you.
Discover the expert in you.
At any time there are 2,000 thunderstorms occurring around the world. These produce 100 lightning strikes a second and 8 million bolts of lightning daily. Thunderstorms are possible year round and at any time of the day but are most likely to form during the spring and summer season in the afternoon and evening. An average thunderstorm has a 15-mile diameter and is 30 minutes in duration.
Transducers transform or convert energy into a measurable and more utilizable form. Although the main functions of different transducers are the same, they can be classified into different types depending on how they are made, how they transform energy, and what type of energy they transform.
Objects either conduct or don't conduct electricity. Most metals, particularly copper, are good conductors of electricity; they allow electrons to flow through them. The majority of non-metallic objects do not allow electrons to flow through them, so are considered good insulators which provide protection between electrical current and you.
Biodiesel fuels are organically produced by recycling used-up (waste) and even unused products, such as vegetable and other cooking oils, by transforming them into clean-burning diesel-type fuels. Biodiesel fuels are generally considered to be better for the environment, since they're biodegradable and produce less pollution than fossil fuels. They also help to conserve fossil fuel supplies. However, even with all of their advantages, biodiesels do have some drawbacks.
Making a vertical pass when using the stick welding process is the same basic idea as horizontal welding but it is much more difficult to learn. Because the electrode is traveling uphill, many of the properties change. The angle of the electrode is different, for instance, which changes the penetration values. Also, you have to account for the puddle traveling downward instead of staying in one place.
A laboratory safety checklist in a laboratory helps in the recognition, evaluation and control of physical and chemical hazards associated with laboratory operations. This is necessary because the laboratory is where scientists carry out experiments that can require a lot of potentially hazardous materials.
Every electronic device in the world needs electricity in order to work. The electricity used by these devices is supplied in a variety of different ways, including batteries, reusable energy such as solar panels and electrical outlets. Most electronic devices, including those that run on batteries, come with or can be hooked up to an electrical power cord. These electrical power cords allow devices to run as long as they remain plugged into a working outlet, saving the batteries or reserve power until it needs to be moved.
Prevent accidents and injuries by teaching your children about electrical safety as soon as they are old enough to understand. Playing games and participating in electrical safety activities is a good way to keep their attention when discussing this or any serious health matter. Utilize online games or make up your own.
All electrical and electronic devices consume power. This power is provided in the form of electrical voltage and current. Power is actually calculated by multiplying voltage with current. We all are familiar with 110 and 220 volt electrical supply at homes and offices. This supply is of alternating (AC) type; that is, the voltage varies periodically between positive and negative amplitudes. Most electronic devices function on direct supply (DC) voltage, where the voltage remains constant.
Buried and overhead electrical transmission lines pose a hazard to excavator operators. The Department of Energy reports numerous incidents where the bucket, arm or boom of an excavator has made accidental contact with, or penetrated, energized power lines.
The generation of electricity -- most of which is generated at between 13.2 and 24 kilovolts -- is a highly dangerous business. The failure of electrical power generation equipment can result in fires and explosions and accidents can occur if workers fail to follow safety procedures designed to control energy sources.
Science laboratories are potentially dangerous places. The chemicals used in them can damage people and equipment quickly and severely if not handled with care and proper procedure. Almost any lab uses some gases, if only to burn to heat Bunsen burners. Many labs stock a variety of gases that may be hazardous in several distinct ways. Understanding all the potential dangers of gas in the science laboratory is essential for safe work.
Biodiesel is a diesel fuel made by creating a chemical reaction between vegetable oil or animal fat and an alcohol. Since renewable, organic materials are used in the fuel production, biodiesel is a popular green substitute for regular fuel in any diesel running engine. You can further the recycling benefits of making biodiesel by using waste or used vegetable oil instead of getting rid of the waste materials. The process is a simple process of following the exact measurements and mixing accordingly, but you will need to be patient and precise in your actions for effective results.
Pyrometers are used for measuring high temperatures by calculating radiation output. Also called radiation devices, pyrometers do not have to touch the material in order to read the temperature. Pyrometers must be calibrated to deliver accurate readings.
Spot welding is ideal for people who have felt too intimidated by the equipment to use a welding machine but still wanted to learn the craft. With spot welding, you can weld quickly and easily and get fantastic and sturdy results. Be sure to don your protective gear before getting started.
A pyrometer measures heat admitted from an object visibly bright or incandescent. Pyrometers are a class of thermometers scientists use to determine the heat and type of heat emitted from an object. The crucial difference between a pyrometer and other types of thermometers is the incandescent levels from the heated objects are usually far too hot for contact. That is why pyrometers have optical scanners that measure the heat. Since there are different types and levels of heat, there are different types of pyrometers.
Home-made biodiesel can be processed from vegetable oil and can be used in a variety of settings, ranging from powering diesel engines to kerosene heaters (ChemistryLand). The reader should be cautioned that producing your own biodiesel is a process that has its own inherent risks and is potentially hazardous due to the releasing of harmful vapors and gases. The process described is meant to assemble a biodiesel processor on a small scale.
According to the National Severe Storms Laboratory, thunderstorms can cause damage due to high winds, flash flooding from rain and from lightning strikes. Strong thunderstorms can also spawn tornadoes, which can cause massive destruction to personal and business property. It is important to keep a sharp eye on the weather as it turns bad and take appropriate safety precautions, as severe storms can indirectly and directly lead to injuries or death.
Both mechanical and electronic devices often rely on transducers as part of their functional structure. These devices have been around for some time, and have taken on a number of different varieties and applications.
Silver Biotics is a holistic, colloidal silver product made by American Biotec Labs. Silver Biotics is meant to promote better health and a stronger immune system and is marketed as an aid in natural healing.
An electrical arc flash is a short circuit where electricity unexpectedly uses the air and flashes between conductors, such as from one wire to another. The blast is very powerful. It is a hazard and is the cause of half of all electrical fatalities. In the United States, the federal agency OSHA regulates work place safety for arc flash.
An arc flash is an electrical hazard where electricity uses the air as transit and suddenly arcs between two conductors. Conductors are formed from materials where electricity can flow easily, such as copper. The blast or explosion that results because of arc flash may be fatal. The intensity may cause injuries such as burns, and the loss of eyesight and hearing.
Arc welding is the process of spot welding using an electrode. There are many different types of arc welding, depending on application. TIG welding, for instance, stands for tungsten inert gas and uses a gas supply to help shield the weld from oxygen. Other types of welding use only an electrode that is coated in a flux that produces gases as it burns up, protecting the weld. All versions use a large amount of electrical power.
Working with electricity presents safety hazards. Unsafe work practices can lead to electrical fires, explosions or electric shock. By taking precautions such as checking equipment before use and using it correctly, electricians can reduce electricity-related injuries in the laboratory.
Arc welding is a commonly used fabrication process for building metal structures. The electrical welding process results in several safety hazards that the welder must account for when preparing to weld.
Electricity is dangerous because it can kill. The careless use of electricity, even when the electricity is not lethal, can damage equipment and cause fires, electrical shock and burns. Principles of electrical safety encompass following the rules of study, preparation, observation and precaution.
Everyone wants their children to be safe from dangers that exist even in their own homes. Unfortunately, it can be difficult to teach them if they are always watching television and playing video games. But safety watchdog groups have produced games that teach your children electrical safety while they play.
We use mercury not only in thermometers but in dental fillings, fluorescent lights, industrial equipment and electrical switches. Although mercury exists in nature, most of the mercury humans and animals are exposed to is the product of human waste or industrial pollution. While pure mercury can be harmful, mercury compounds are far more dangerous.
The use of open flames, with the proximity of flammable and reactive materials, underscores the need for fire safety in the science lab. Poor supervision, sloppy techniques, disregard for proper chemical handling and storage and inadequate safety equipment increase the risk and severity of fires. A deliberate strategy must be developed and vigilantly followed to provide adequate fire safety.
When handled carelessly, high-voltage electricity can cause burns, internal injuries and electrocution death. When working on high-voltage electrical systems, it's important to remain aware of the threat of electrical injury and to follow proper safety procedures to keep from elevating the risk of an accident.
House repairs can be intimidating because of the cost and effort they require, especially if you see a whole bunch of problems that need to be dealt with at once. You can reduce your stress by prioritizing the repairs. Focus on taking care of the most important items first--especially those involving safety--and then handle the other problems one by one.
Lexan is not glass, but a polycarbonate resin thermoplastic. It is strong, transparent, temperature-resistant and easily formed, so is commonly used in place of glass.
For decades, optical sensors have been finding their way into an increasing number of applications. The development of semiconductors in the 1940s and '50s led to lower-cost, compact and efficient light-sensing devices. Photodetectors were used in camera light meters, street lights and traffic counters. Fiber optics allowed sensitive equipment to work in electrically noisy environments. Sensors packaged with tiny integrated circuits yielded detectors that were simpler to use. Optical sensors have improved efficiency and reliability of control systems at a reasonable cost.
When someone is shocked by electricity, his muscles become constricted and he can't move. The electric current moves through the body and to the ground, its ultimate destination. This shock can cause breathing and heart problems, and could even lead to death when the voltage is high enough. To avoid getting shocked, keep in mind a few important safety rules.
A stick welder is a must-have tool and using one is a skill for anyone wanting to perform metal fabrication or repair. Stick welding is one of the most heavy-duty methods for permanently attaching metal parts together. Stick welders range in size from common buzz boxes, small AC welders, to very expensive gasoline generator sets that can cost thousands of dollars. Regardless of the type and size of the stick welder, the basic procedure remains the same for permanently joining two pieces of metal together.
When discussing electricity and safety, many people neglect to mention the fact that most house fires are caused by electrical problems. Avoid handling electrical appliance with wet hands, and switch off electrical supplies when changing appliances with help from a science teacher in this free video on electricity safety.
Welding in confined spaces requires more safety precautions than the average welding job. A confined space not only means limited space, it may also include a compromised entry and exit or improper ventilation due to the lack of fresh air exchange. Consider all of the safety hazards, including the buildup of dangerous fumes and particles.
