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    Glossary Total Internal Reflection

    light reflects entirely within a medium at a critical angle

    Total Internal Reflection (TIR) occurs when a light wave traveling through a medium with a higher refractive index (like water or glass) hits the boundary of a medium with a lower refractive index (like air) at an angle greater than the critical angle, causing the light to be completely reflected back into the original medium rather than refracting through the boundary. This phenomenon is crucial in fiber optics, where it allows light to be efficiently transmitted over long distances with minimal loss.

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    1. Attenuated Total Reflection Fourier Transform Infrared Spectroscopy Analysis of Human Hair Fiber Structure Applied spectroscopy · 2008 · 19 citations
    2. Fourier Transform Infrared Attenuated Total Reflection Analysis of Human Hair: Comparison of Hair from Breast Cancer Patients with Hair from Healthy Subjects Applied spectroscopy · 2005 · 42 citations
    3. Light scattering from human hair fibers 2003 · 90 citations
    4. Analysis of Lipids in the Medulla of Japanese Hair and Their Function Cosmetics · 2018 · 7 citations
    5. ecancermedicalscience ecancermedicalscience · 2016 · 16 citations
    6. A Phase 1 Study to Investigate the Effects of Cortexolone 17α‐Propionate, Also Known as Clascoterone, on the QT Interval Using the Meal Effect to Demonstrate ECG Assay Sensitivity Clinical Pharmacology in Drug Development · 2021 · 2 citations
    7. A discourse on human hair fibers and reflections on the conservation of drug molecules International Journal of Legal Medicine · 1996 · 47 citations
    8. Incidence and haemato-biochemical alterations in dermatoses associated with hypothyroidism in dogs International Journal of Advanced Biochemistry Research · 2026
    9. The lack of significant changes in scalp hair follicle density with advancing age British Journal of Dermatology · 2005 · 33 citations
    10. Construction of regulatory network for alopecia areata progression and identification of immune monitoring genes based on multiple machine-learning algorithms Precision clinical medicine · 2023 · 3 citations
    11. Cutaneous signals of immune system disease Current problems in dermatology · 1991
    12. Physical and mechanical properties of the hair shaft: A review of measurement techniques to verify the efficacy of cosmetic products Seven Editora eBooks · 2024
    13. Non-Invasive Techniques for Evaluating Alopecia Areata Mædica · 2023
    14. Effect of Exercise Interventions on Metabolic, Reproductive and Mental Health in Overweight Women with Polycystic Ovary Syndrome Victoria University Research Repository (Victoria University) · 2021
    15. Internal structural changes in age‐related curved hair due to cyclical extension: An IR spectroscopy study International Journal of Cosmetic Science · 2025 · 1 citations
    16. Social rejection in minority groups and its impact on current and future mental health: a study in transgender people BMC Psychology · 2025 · 1 citations
    17. Skin, a mirror reflecting diabetes mellitus: A longitudinal study in a tertiary care hospital in Gujarat Indian Journal of Endocrinology and Metabolism · 2013 · 11 citations
    18. Modeling Oxidative Stress–Linked Telogen Effluvium: A Monte Carlo Simulation Using Published Trichoscopy Norms and Cannabis Exposure Distributions 2025
    19. Serum Levels of VWF, t-PA, TNF-α, and ICAM-1 in Patients Receiving Hemocoagulase Combined with Platelet-Rich Plasma during Total Hip Replacement Genetics Research · 2022 · 2 citations
    20. Baseline Neutrophil-to-Lymphocyte Ratio Stratifies Early Trichoscopic Response to Platelet-Rich Plasma–Based Regimens in Non-Scarring Alopecia: A Real-World Cohort with Internal Validation Using an Interpretable Neural Network Life · 2026
    21. Development of novel wound dressing based on elastin-like recombinamers for skin regeneration 2024
    22. Analysis of the FGF gene family provides insights into aquatic adaptation in cetaceans Scientific reports · 2017 · 20 citations
    23. Transcriptional Profiling in Rat Hair Follicles following Simulated Blast Insult: A New Diagnostic Tool for Traumatic Brain Injury PLoS ONE · 2014 · 10 citations
    24. The impact of COVID-19 pandemic and lockdown on chronic stress assessed by hair cortisol analysis via LC-MS/MS Journal of Laboratory Medicine · 2025
    25. Bilateral osteonecrosis of the femoral head associated with corticosteroid therapy for alopecia areata: a case report and review of the literature Therapeutics and Clinical Risk Management · 2018 · 3 citations
    26. A new classification of early female pattern hair loss International Journal of Trichology · 2018 · 3 citations
    27. Fermented grapeseed oil repairs chemically damaged hair via enhanced permeability mechanisms Scientific Reports · 2025
    28. Recommendations from the 2023 international evidence-based guideline for the assessment and management of polycystic ovary syndrome European journal of endocrinology · 2023 · 6 citations
    29. Hair cortisol in polycystic ovary syndrome Scientific reports · 2022 · 2 citations
    30. Efficacy of polyphenolic compounds for hair regeneration: a systematic review and meta-analysis of randomized controlled trials. PubMed · 2026