Singlet

In practice, forbidden transitions can occur, but they do so with much lower probability than allowed transitions. How do forbidden transitions happen? In spectroscopy, a forbidden mechanism (forbidden transition or forbidden line) is a spectral line associated with absorption or emission of photons by atomic nuclei, atoms, or molecules which undergo a transition that is […]

In many cases, the higher energy level for phosphorescence emission is a triplet state. The electronic transitions that result in phosphorescence emission are sometimes called ‘forbidden’ transitions. ‘Forbidden’ transitions occur at much slower speeds than ‘allowed’ transitions. Is phosphorescence forbidden? Phosphorescence is the simplest physical process which provides an example of spin-forbidden transformation with a […]

A process in which a singlet excited electronic state makes a transition to a triplet excited state at the point where the potential energy curves for the excited singlet and triplet states cross. This transition is forbidden in the absence of spin-orbit coupling but occurs in the presence of spin-orbit coupling. Why intersystem crossing is […]

Explanation: A doublet of doublets (dd) occurs when a hydrogen atom is coupled to two non-equivalent hydrogens. How many hydrogens is a doublet? Two hydrogensIf there is one hydrogen on the adjacent atoms, the resonance will be split into two peaks of equal size, a doublet. Two hydrogens on the adjacent atoms will split the […]

Fictional introjects, also called fictives, are alters that are based off of fictional people or characters. While not as common as other types of alters, fictives are just as important. What are the different types of alters? 10 Types of ‘Alters’ in Dissociative Identity Disorder Animal Alters. Children often develop animal alters due to either […]

In quantum mechanics, a triplet is a quantum state of a system with a spin of quantum number s=1, such that there are three allowed values of the spin component, ms = −1, 0, and +1. What is a singlet and s triplet? A singlet state refers to a system in which all the electrons […]

A pair of two similar or equal things; couple. (linguistics) One of two or more different words in a language derived from the same origin but coming by different routes (e.g., toucher and toquer in French or yard and garden in English). What is an example of a doublet? Other examples of doublets include wine […]

Definition of doublet 1 : a man’s close-fitting jacket worn in Europe especially during the Renaissance. 2 : something consisting of two identical or similar parts: such as. a : a lens consisting of two components especially : a handheld magnifier consisting of two lenses in a metal cylinder. What is a word doublet? In […]

why is CCl4 more stable than CCl. At the top of Group 4, the most stable oxidation state shown by the elements is +4. This is the oxidation state shown by carbon and silicon in CCl4 and SiCl4. These therefore have no tendency to split up to give dichlorides. Which is more stable GeCl2 or […]

a foolish or stupid person. : a foolish or stupid person. Is simpleton a simple person? The word ‘simple’ has its own adverbial form as ‘simply’ as in the sentence ‘he ran simply fast’. In the given example the word simply is used as an adverb. On the other hand the word ‘simpleton’ indicates a […]

Spring singleton beans are NOT thread-safe just because Spring instantiates them. Are singletons thread safe? Is singleton thread safe? A singleton class itself is not thread safe. Multiple threads can access the singleton same time and create multiple objects, violating the singleton concept. The singleton may also return a reference to a partially initialized object. […]

Thread Safe Singleton in Java Create the private constructor to avoid any new object creation with new operator. Declare a private static instance of the same class. Provide a public static method that will return the singleton class instance variable. Can we make singleton as thread safe? Thread Safe Singleton: A thread safe singleton is […]

Marking the class sealed prevents someone from trivially working around your carefully-constructed singleton class because it keeps someone from inheriting from the class. Why are classes sealed? Sealed class is used to stop a class to be inherited. You cannot derive or extend any class from it. Sealed method is implemented so that no other […]

Lazy initialization of an object means that its creation is deferred until it is first used. (For this topic, the terms lazy initialization and lazy instantiation are synonymous.) What is a Lazy object C#? Lazy initialization is a technique that defers the creation of an object until the first time it is needed. In other […]

Lazy Initialization is a performance optimization where you defer (potentially expensive) object creation until just before you actually need it. One good example is to not create a database connection up front, but only just before you need to get data from the database. What is lazy initialization in Java example? Lazy initialization is a […]

Net 4.0 type Lazy guarantees thread-safe object initialization, so this type could be used to make Singletons. Using Lazy will make sure that the object is only instantiated when it is used somewhere in the calling code. Is Lazy thread-safe? By default, Lazy objects are thread-safe. That is, if the constructor does not specify the […]

The lazy loading improves the performance of an application if it is used properly. We can use the Lazy keyword to make the singleton instance lazy loading. What is lazy loading in Singleton? Singleton Class in Java using Lazy Loading The instance could be initialized only when the Singleton Class is used for the first […]

A triplet state is an electronic state in which two electrons in different molecular orbitals have parallel spins, as shown in Fig. 4.35. The name “triplet” reflects that there are three triplet sublevels as discussed earlier (see Section 4.15. 1). Why triplets are triplets? fine structure there are three components (triplets). This arises because the […]

Singleton Class in Java using Lazy Loading The instance could be initialized only when the Singleton Class is used for the first time. Doing so creates the instance of the Singleton class in the JVM Java Virtual Machine during the execution of the method, which gives access to the instance, for the first time. What […]

Net 4.0 type Lazy guarantees thread-safe object initialization, so this type could be used to make Singletons. Using Lazy will make sure that the object is only instantiated when it is used somewhere in the calling code. What is lazy loading in singleton? Singleton Class in Java using Lazy Loading The instance could be initialized […]