Q.Explain the construction and working of Ruby laser with the help of energy level diagram.
Ruby is a crystal of aluminum oxide Al2O3 in which chromium Cr3+ ions are added as impurity (0.5%).So its colour is pink. Ruby rod of 4cm in length and 0.5 cm in diameter is generally used. The end faces of rod are strictly made parallel, grounded and silver polished. The one end face is fully reflecting and other end is partially reflecting. A helical Xenon flash tube is surrounded the ruby rod with high
---
# 🌱 **Vermicomposting: Stages and Precautions**
---
## 🧾 **Introduction:**
Vermicomposting is a **bio-oxidative process** in which **earthworms** convert **organic waste** into **nutrient-rich compost** known as **vermicompost** or **worm castings**. This method is eco-friendly, cost-effective, and highly efficient in recycling organic matter. It not only helps in waste management but also improves soil health, fertility, and crop yield naturally.
The process depends on the activity...
Le Community Management consiste à gérer les publications sur les réseaux sociaux et à produire du contenu original. Ses objectifs :
Améliorer l’image de marque et l’e-réputation
Dialoguer avec les clients, fidéliser, prospecter
Tester des produits, innover grâce à l’intelligence collective
E-réputation : Se base sur les contenus et avis en ligne ; elle évolue lentement et repose sur des faits concrets (qualité, service client, etc.).
Image de marque
Comparison of Blue Ocean Strategy and Red Ocean
Strategy
1.• Blue Ocean Strategy focuses on creating uncontested market space.
• Red Ocean Strategy competes in existing market Space
2 •Blue Ocean Strategy makes the competition irrelevant.
• Red Ocean Strategy aims to beat the competition.
3.• Blue Ocean Strategy creates and captures new demand.
• Red Ocean Strategy exploits existing demand.
4.• Blue Ocean Strategy breaks the value/cost trade-on.
• Red Ocean Strategy makes the value/cost
1. La Recherche Documentaire :
C'est une démarche systématique pour identifier, récupérer et traiter les données.
Les Étapes Clés :
1 – Comprendre et définir le sujet
2 – Élaborer une problématique
3 – Rechercher des sources fiables
1. Острая дизентерия.
2. Холера.
3. Острая дизентерия, гастроэнтероколитическая форма.
4. Хроническая дизентерия, рецидивирующая форма.
5. Ботулизм.
6. Острая дизентерия, колитическая форма.
7. Сальмонеллез, гастроэнтеритическая форма.
8. Сальмонеллез, гастроэнтеритическая форма....
Topic 8: Energy – Forces Doing Work Work done = energy transferred when a force moves an object over a distance.Power = how quickly energy is transferred. Energy stores: kinetic, gravitational potential, elastic potential, thermal, chemical, nuclear. Energy transfers occur via mechanical work, electrical work, heating, and radiation.
Efficiency: The higher the efficiency, the less energy is wasted (often as heat/sound).
No machine is 100% efficient (except ideal transformers in theory).
Required
A Partnership is a business organization where two or more people join hands to run a business and share profits & losses.
"Partnership is the relation between persons who have agreed to share the profits of a business carried on by all or any of them acting for all."
| Feature | Explanation |
|---|---|
| Agreement | There must be an agreement (oral/written) between |
1. Simile
A simile is a figure of speech that compares two different things using the words “like” or “as”. It is used to create vivid imagery and help the reader understand the comparison. For example, “He is as brave as a lion” compares a person’s bravery to that of a lion. Similes are commonly used in poetry and literature to make descriptions more interesting and imaginative. They appeal to the senses and help readers visualize the scenes more clearly. Similes are different from