Knowledge in Photo Journalism

photography techniques simplified

Access the PDF to become the master in photography by reading and click awesome pictures. Heres it!

Radix Coverage

Radix 5.0 coverage by a Hindi Daily of Ranchi. It talks about the crux of discussion made by some speakers that No work done is small. Starting with small contributions, one can achieve big projects in life.

Engineering physics(applied physics)

This document contains topics in the engineering physics.some important topics are covered in this pdf.

Notes on Introduction to Modern PR

These file contains notes on modern PR. notes for students of Journalism and Mass communication

Notes on Electronic Media

This File contains notes on electronic media. Students of mass communication and journalism can use this file for studying.

Schrödinger time independent equation

Schrödinger time independent wave equations important physics questions

The Left Hand Rule( for motors)

The Left Hand Rule( for motors)

ph measurement

In chemistry, pH (/piːˈeɪtʃ/, denoting 'potential of hydrogen' or 'power of hydrogen'[1]) is a scale used to specify the acidity or basicity of an aqueous solution. Lower pH values correspond to solutions which are more acidic in nature, while higher values correspond to solutions which are more basic or alkaline. At room temperature (25 °C or 77 °F), pure water is neutral (neither acidic nor basic) and has a pH of 7. The pH scale is logarithmic and inversely indicates the concentration of hydrogen ions in the solution (a lower pH indicates a higher concentration of hydrogen ions). This is because the formula used to calculate pH approximates the negative of the base 10 logarithm of the molar concentration[a] of hydrogen ions in the solution. More precisely, pH is the negative of the base 10 logarithm of the activity of the hydrogen ion.[2] At 25 °C, solutions with a pH less than 7 are acidic, and solutions with a pH greater than 7 are basic. The neutral value of the pH depends on the temperature, being lower than 7 if the temperature increases. The pH value can be less than 0 for very strong acids, or greater than 14 for very strong bases.[3] The pH scale is traceable to a set of standard solutions whose pH is established by international agreement.[4] Primary pH standard values are determined using a concentration cell with transference, by measuring the potential difference between a hydrogen electrode and a standard electrode such as the silver chloride electrode. The pH of aqueous solutions can be measured with a glass electrode and a pH meter, or a color-changing indicator. Measurements of pH are important in chemistry, agronomy, medicine, water treatment, and many other applications.