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  2. Photorejuvenation - Wikipedia

    en.wikipedia.org/wiki/Photorejuvenation

    A fractional laser delivers laser light to the skin. Hundreds or thousands of laser pinpoints may be used per square inch, leaving healthy skin between the ablated areas. Complications observed in a study of 961 treatments included acne and herpes outbreaks. [6] There have been anecdotal negative accounts of bad scarring and hyperpigmentation. [7]

  3. Central Board of Secondary Education - Wikipedia

    en.wikipedia.org/wiki/Central_Board_of_Secondary...

    For promotion from Secondary level (Class IX-X) to Senior Secondary level (Class XI-XII), a student must obtain, for all subjects (or best 5 if 6 subjects are taken), 33% overall, without any minimum theory mark requirement. Originally, the passing criteria were set such that a student had to get 33% in both the theory and practical components.

  4. All India Senior School Certificate Examination - Wikipedia

    en.wikipedia.org/wiki/All_India_Senior_School...

    The results of the examinations are usually declared in the first week of May to Mid-June. In general, about 80% of candidates receive a passing score. [8] The Delhi High Court has directed the Central Board of Secondary Education and Delhi University to discuss the ways by which the results of the main exam, revaluation, and compartment exam can be declared earlier than usual so that ...

  5. Board examination - Wikipedia

    en.wikipedia.org/wiki/Board_examination

    The 2025 CBSE board examination for Class 10 were held from 15 February till 18 March and from 15 February till 4 April for class 12. The usual starting time for each exam was 10:30 am but depending on the length and/or maximum marks for the subject, the finishing time was either 12:30 pm (2 hours, shorter exams, usually 40-50 marks) or 1:30 pm ...

  6. Continuous and Comprehensive Evaluation - Wikipedia

    en.wikipedia.org/wiki/Continuous_and...

    Continuous and Comprehensive Evaluation (CCE) was a process of assessment, mandated by the Right to Education Act, of India in 2009.This approach to assessment was introduced by state governments in India, as well as by the Central Board of Secondary Education in India, for students of sixth to tenth grades and twelfth in some schools.

  7. Carbon-dioxide laser - Wikipedia

    en.wikipedia.org/wiki/Carbon-dioxide_laser

    A test target bursts into flame upon irradiation by a continuous-wave kilowatt-level carbon-dioxide laser. The carbon-dioxide laser (CO 2 laser) was one of the earliest gas lasers to be developed. It was invented by Kumar Patel of Bell Labs in 1964 [1] and is still one of the most useful types of laser. Carbon-dioxide lasers are the highest ...

  8. List of secondary school leaving qualifications - Wikipedia

    en.wikipedia.org/wiki/List_of_secondary_school...

    For each leaving certificate student, they obtain a certain number of points coinciding with the results they received in their examinations. These results will then determine the qualifications of the student; Whether they get into university or whether they have to have an alternative method into what they wish to study.

  9. TEA laser - Wikipedia

    en.wikipedia.org/wiki/TEA_laser

    A TEA laser is a gas laser energized by a high-voltage electrical discharge in a gas mixture generally at or above atmospheric pressure. The most common types are carbon dioxide lasers and excimer lasers, both used extensively in industry and research; less common are nitrogen lasers. The acronym "TEA" stands for "transversely excited atmospheric".