Double-blind testing is a scientific method where neither the test subjects nor the administrators know who is in the control or experimental group. It eliminates bias and ensures accurate results. In pharmaceutical testing, a placebo is given to the control group while the experimental group receives the actual drug. Double-blinding is an industry standard and […]
Chemical reactions fall under four main types: synthesis, decomposition, single and double substitution. Energy and matter cannot be created or destroyed, but can be altered in a chemical reaction. Single substitution exchanges one free element for another, while double substitution exchanges components of two compounds. Substitution reactions are often called ionic reactions, but can also […]
A double crust pie has two crusts, one top and one bottom, that seal around the ingredients to prevent juices from escaping. Lattice crusts are attractive but may not work with fruit that hardens when exposed to oven heat. Recipes vary in measurements, so check to make enough crust for your pie. A double crust […]
Double cream, a thick and heavy cream with nearly 50% butterfat, is best from the UK. It can be found in grocery stores or purchased directly from dairy producers. Organic options are available, and heavy cream or Devonshire cream can be substituted if necessary. The best double cream comes from the UK, where the term […]
A double helix is a geometric shape consisting of two congruent helixes around the same axis. The most well-known example is the structure of DNA, consisting of two strands of nucleotides. The helix is a common shape in nature, found in plants and proteins. A space nebula in the Milky Way galaxy has also been […]
A double fault is a serious issue in computing when the CPU cannot handle a system event, causing crashes and data loss. It is caused by hardware problems or software bugs and can result in a blue screen of death. Troubleshooting techniques include checking hardware and updating software. In computing, a double fault is a […]
A double array can refer to an array of floating point numbers or a multidimensional array with two sets of indexes. It can also refer to an array of instantiated classes. Each element in a double array takes up 8 bytes of memory and is the start of another array. There are two uses for […]
Consider price, fabric, style, body type, and intended use when shopping for a double breasted blazer. Look for 100% wool or no more than 25% synthetic content, and stick to darker, more conservative colors. Shorter men with stocky builds may prefer a single-breasted blazer. Check measurements and inspect for quality before purchasing. When shopping for […]
Electric double layer capacitors, also known as supercapacitors or ultracapacitors, can store more electric charge than ordinary capacitors due to their larger capacitance value. They use an electrochemical mechanism and an electrolyte between plates to exhibit high capacitance. They are seen as a short-term power backup solution and have potential in the field of power […]
Steel double doors are made of two steel panels with insulation in between. They are used for fire safety, sound resistance, and security in commercial and industrial settings. They can be solid or have a viewing window and can be installed internally or at entrances. A steel double door is a door made up of […]
Double wall pipes are used in manufacturing, process and construction industries as a containment pipe for harmful materials or weight reduction technique in water transportation systems. They can be made of HDPE, PVC or stainless steel with a leak detection system for gas transfer. Double wall pipes are also used to prevent cross contamination and […]
Double wall pipes are used in manufacturing, construction, and water transportation industries. They can act as containment pipes for harmful materials and save weight in water transportation systems. They are commonly made from HDPE or PVC, with stainless steel versions for toxic gas transfer. Double wall pipes can also prevent cross-contamination and external contamination. Jacketed […]
Choose a double boiler that is large enough and includes a water fill line and heating instructions. Look for two significantly different sized pots and easy-to-grip handles. Quality stainless steel double boilers are the best option and often come with a lifetime guarantee. The best double boiler is one that is large enough for your […]
A double belly button piercing involves two piercings around the navel, with options for placement and multiple piercings. Jewelry options include bars, dangle jewelry, and personalized pieces. A double belly button piercing is classified as two piercings around the belly button. Piercings can be placed above, below, or to the sides of the navel. There […]
Double aortic arch is a rare congenital cardiovascular malformation that can compromise a child’s digestive and respiratory functions. It often remains undiagnosed until the child is older. Treatment requires surgical separation of the arches to relieve symptoms and restore proper respiratory function. A double aortic arch is a rare congenital cardiovascular malformation that can present […]
Double indemnity is an insurance policy provision that pays the beneficiary double the standard amount in some cases of accidental death. It is not applicable to homicide, suicide, or natural causes. The coverage is also known as an “accidental death benefit” and is usually offered as a supplement to life insurance. It requires a more […]
Double patenting is when a person or company files multiple applications for a patent on a single invention to extend its life. Most patent-granting countries deny such applications. The USPTO rejects applications based on statutory law and judicial precedents. Inventors can remedy the problem by modifying the application or filing a disclaimer. Double patenting occurs […]
Double homicide is the intentional killing of two people, which is considered the most serious form of homicide in most countries. Aggravating factors, such as the status of the victim or how the crime was committed, can lead to more severe punishments. In the US, a double homicide can result in successive prison sentences, including […]
Double billing is when attorneys bill two or more clients for work done during the same time period, which is prohibited by the American Bar Association. It is difficult to control as billing records are confidential. Lawyers are under pressure to bill clients for at least 2,000 hours a year, and some bill 5,000 hours […]
The double tap is a shooting technique where two shots are fired in quick succession with the intention of hitting the same target. It originated from military and covert forces to compensate for the lack of stopping power in handguns. With practice, the time between shots becomes shorter, and it can be extended to a […]
