أتمنى أن يكون الختام...مسك...؟
بعد صلاة الفجر و أنا أفكر في هذه المواضيع البسيطة ... ألاحظ أعجازعلمي بالقران والسنة النبوية وعظمة محمد صلى الله عليه وسلم...
سوف أذكرها بالنهاية...؟
ذكر المولى عز وجل ...بسورة الواقعة
آيه رقم89(فروح وريحان وجنت نعيم)
الريحان معروف للجميع...ليس يرتقي من الناحية الجمالية الى مستو الورود والأزهار...لماذا ذكر بتحديد الريحان...؟
الشكل الخارجي مجرد مظهر...فقط ...الجوهر هو الأهم ولذا نصيحتي لشباب المقدمين على أختيار جناح جديد أن يراعوا مسألة اللون بدقة و درجة اللون وقابلية اللون لأمتصاص طاقات الشمس الحرارية وأشعة uv مع العلم الشمس تحتوي أشعتها على مجموعة آخرى من أنواع الأشعة...؟
https://en.wikipedia.org/wiki/Electromagnetic_radiation
https://en.wikipedia.org/wiki/Color
ولذا أختارت شركة adventure الدرجات اللونية لأجنحتها على حسب الطول الموجي لكل لون و مقدرة اللون على أمتصاص الطاقة الحرارية...وهذا الدليل للمشككين...؟
Color, wavelength, frequency and energy of lightColor/nm/1014
https://en.wikipedia.org/wiki/Color
أليست شركة جديرة بالأهتمام... والأطلاع على فلسفة هذه الشركة...في عالم صناعة البراموتور وملحقاته...؟
[edit] Harmful Effects of UV Radiation
In humans, prolonged exposure to solar UV radiation may result in acute and chronic
health effects on the
skin,
eye, and
immune system[7].
UVC rays are the highest energy, most dangerous type of ultraviolet light. Little attention has been given to UVC rays in the past since they are filtered out by the
atmosphere. However, their use in equipment such as pond
sterilization units may pose an exposure risk, if the lamp is switched on outside of its enclosed pond sterilization unit.
Ultraviolet photons harm the
DNA molecules of living organisms in different ways. In one common damage event, adjacent
Thymine bases bond with each other, instead of across the "ladder". This makes a bulge, and the distorted DNA molecule does not function properl
“Ultraviolet (UV) irradiation present in sunlight is an environmental human carcinogen. The toxic effects of UV from natural sunlight and therapeutic artificial lamps are a major concern for human health. The major acute effects of UV irradiation on normal human skin comprise sunburn inflammation
erythema,
tanning, and local or systemic
immunosuppression.”
— Matsumura and Ananthaswamy , (2004)
[8]
UVA, UVB and UVC can all damage
collagen fibers and thereby accelerate aging of the skin. Both UVA and UVB destroy vitamin A in skin which may cause further damage
[9]. In general, UVA is the least harmful, but can contribute to the aging of skin, DNA damage and possibly skin cancer. It penetrates deeply and does not cause
sunburn. Because it does not cause reddening of the skin (erythema) it cannot be measured in the
SPF testing. There is no good clinical measurement of the blocking of UVA radiation, but it is important that
sunscreen block both UVA and UVB.
The reddening of the skin due to the action of sunlight depends both on the amount of sunlight as well as the sensitivity of the skin ("erythemal action spectrum") over the UV spectrum.
UVB light can cause
skin cancer. The radiation
excites DNA molecules in skin cells, causing
covalent bonds to form between adjacent
thymine bases, producing thymidine dimers. Thymidine dimers do not base pair normally, which can cause distortion of the DNA helix, stalled replication, gaps, and misincorporation. These can lead to
mutations, which can result in
cancerous growths. The
mutagenicity of UV radiation can be easily observed in
bacteria cultures. This cancer connection is one reason for concern about
ozone depletion and the ozone hole. UVB causes some damage to collagen but at a very much slower rate than UVA.
As a defense against UV radiation, the body tans when exposed to moderate (depending on
skin type) levels of radiation and UVA in particular triggers the release of the brown pigment
melanin from melanocytes; while UVB mostly triggers de novo production. This tan helps to block UV penetration and prevent damage to the vulnerable skin tissues deeper down.
Suntan lotion, often referred to as "sun block" or "sunscreen", partly blocks UV and is widely available. Most of these products contain an
SPF rating that describes the amount of protection given. This protection factor, however, applies only to UVB rays responsible for sunburn and not to UVA rays that penetrate more deeply into the skin and may also be responsible for causing cancer and wrinkles. Some sunscreen lotion now includes compounds such as
titanium dioxide which helps protect against UVA rays. Other UVA blocking compounds found in sunscreen include
zinc oxide and
avobenzone. There are also naturally occurring compounds found in rainforest plants that have been known to protect the skin from UV radiation damage, such as the fern
Phlebodium aureum.
What to look for in sunscreen:
UVB protection: Padimate O,
Homosalate, Octisalate (
octyl salicylate), Octinoxate (
octyl methoxycinnamate)
UVA protection: Avobenzone
UVA/UVB protection: Octocrylene,
titanium dioxide,
zinc oxide, Mexoryl (
ecamsule)
Another means to block UV is
sun protective clothing. This is clothing that has a "UPF rating" that describes the protection given against both UVA and UVB.
شوفوا الأعجاز العلمي اللذي توصلنا له بالحوار والنقاش وأعترف أنني دوما قاسي في الردود...أقبل أعتذاري أخي IIVII
أعزائي شوفوا أعجاز المصطفي الكريم عليه الصلاة والسلام...؟
وهو يأمرنا بالقيلولة وقت القايلة وقد عرفت بأنها الفترة اللتى تتحرك الأبل من مرابضها لشدة حرارة الشمس...
كما ورد في الحديث أو كما قال عليه الصلاة والسلام: قيلو فأنالشياطين لا تقيل...!
سبحان الله ... والله أكبر معجزة والله معجزة من معجزات محمد صلى الله عليه وسلم أخبرنا بها قبل 1428 عام وتكتشف الأن فقط مخاطر الأشعة الفوق بنفسجية UVعلى البشر... أمرنا بالقيلولة...أي الراحة داخل البيت تحت الظل...؟
مع أن الأسلام يدعو الى العمل والجد... ولكن أنظروا الى نبي الرحمة عليه الصلاة والسلام...و الله أعجاز آخر يتكشف لنا من المعجزات اللتى لم يكتشفها أحد بعد...
صدق المولى عز وجل...سورة النجم (وما ينطق عن الهوى(3)إن هو إلا وحى يوحى)(4)....
الأسلام دين الرحمة...يأمرنا بالعمل ... ويأمرنا بالراحة اذا دعت الحاجة الى ذلك...
وهذه الأشعة تسبب مشاكل كثيرة... للبشر اذا تعرضوا لها ومن أهمها سرطان الجلد...أجارنا الله وأياكم البلاء...أقرؤ هذا النص:
https://en.wikipedia.org/wiki/Uv
[edit] Harmful Effects of UV Radiation
In humans, prolonged exposure to solar UV radiation may result in acute and chronic
health effects on the
skin,
eye, and
immune system[7].
UVC rays are the highest energy, most dangerous type of ultraviolet light. Little attention has been given to UVC rays in the past since they are filtered out by the
atmosphere. However, their use in equipment such as pond
sterilization units may pose an exposure risk, if the lamp is switched on outside of its enclosed pond sterilization unit.
Ultraviolet photons harm the
DNA molecules of living organisms in different ways. In one common damage event, adjacent
Thymine bases bond with each other, instead of across the "ladder". This makes a bulge, and the distorted DNA molecule does not function properly
[edit] Skin
“Ultraviolet (UV) irradiation present in sunlight is an environmental human carcinogen. The toxic effects of UV from natural sunlight and therapeutic artificial lamps are a major concern for human health. The major acute effects of UV irradiation on normal human skin comprise sunburn inflammation
erythema,
tanning, and local or systemic
immunosuppression.”
— Matsumura and Ananthaswamy , (2004)
[8]
UVA, UVB and UVC can all damage
collagen fibers and thereby accelerate aging of the skin. Both UVA and UVB destroy vitamin A in skin which may cause further damage
[9]. In general, UVA is the least harmful, but can contribute to the aging of skin, DNA damage and possibly skin cancer. It penetrates deeply and does not cause
sunburn. Because it does not cause reddening of the skin (erythema) it cannot be measured in the
SPF testing. There is no good clinical measurement of the blocking of UVA radiation, but it is important that
sunscreen block both UVA and UVB.
The reddening of the skin due to the action of sunlight depends both on the amount of sunlight as well as the sensitivity of the skin ("erythemal action spectrum") over the UV spectrum.
UVB light can cause
skin cancer. The radiation
excites DNA molecules in skin cells, causing
covalent bonds to form between adjacent
thymine bases, producing thymidine dimers. Thymidine dimers do not base pair normally, which can cause distortion of the DNA helix, stalled replication, gaps, and misincorporation. These can lead to
mutations, which can result in
cancerous growths. The
mutagenicity of UV radiation can be easily observed in
bacteria cultures. This cancer connection is one reason for concern about
ozone depletion and the ozone hole. UVB causes some damage to collagen but at a very much slower rate than UVA.
As a defense against UV radiation, the body tans when exposed to moderate (depending on
skin type) levels of radiation and UVA in particular triggers the release of the brown pigment
melanin from melanocytes; while UVB mostly triggers de novo production. This tan helps to block UV penetration and prevent damage to the vulnerable skin tissues deeper down.
Suntan lotion, often referred to as "sun block" or "sunscreen", partly blocks UV and is widely available. Most of these products contain an
SPF rating that describes the amount of protection given. This protection factor, however, applies only to UVB rays responsible for sunburn and not to UVA rays that penetrate more deeply into the skin and may also be responsible for causing cancer and wrinkles. Some sunscreen lotion now includes compounds such as
titanium dioxide which helps protect against UVA rays. Other UVA blocking compounds found in sunscreen include
zinc oxide and
avobenzone. There are also naturally occurring compounds found in rainforest plants that have been known to protect the skin from UV radiation damage, such as the fern
Phlebodium aureum.
والله أقف الآن خاشع أمام عظمة الله وقدرته... و تلطفه بنا وحمايتنا من شر هذه الأشعاعات الكونية بسبب وجود الغلاف الجوي اللذي يحمينا بأمر وقدرة العزيز الجبار...؟
هذا في رأيى الشخصي ... ربما أكون مخطئ... أن أصبت فمن الرحمن وأن أخطئت فمن نفسي الأمارة بالسوء ...
الأخ العزيزIIVII الرجو أن تسامحني على مابدر مني...؟
الأخ العزيزflysaudi
نشكر ونقدر لك ملاحظاتك.... ولكن أخي الأشعة الفوق بنفسجية uv ودرجة الحرارة تقل بالأرتفاع عن سطح الأرض ما دام الأرتفاع في حدود الغلاف الجوي حتي تصل الى الحد الفاصل بين الغلاف الجوي والفضاء ثم تعود بالأرتفاع التدريجي ...كل الجاذبية الأرضية...؟
أرجو أن الموضوع نال أستحسانكم...وغطاء جانب مهم في عملية أختيار اللون للمظلة الشراعية...؟
تقبلوا تحياتي جميعا
أخوكمaero وخبط ولزق...لأن الموضوع نص ونص.....؟