تكنولوجيا
حفرة سحيقة في غرينلاند أحدثها نيزك بقوة 47 مليون قنبلة هيروشيما
عثر باحثون على حفرة نيزك عملاقة، 5 أضعاف حجم العاصمة الفرنسية باريس، على بعد 0.8 كم تحت الجليد في غرينلاند.
وتعد هذه الحفرة إحدى أكبر الحفر على الأرض، وتشير إلى أن جسما بعرض ألف متر، مصنوع من الحديد، اصطدم بكوكبنا خلال العصر الجليدي الأخير.
ويعتقد أن الانفجار الناتج تسبب بإطلاق الحطام عدة مئات من الأميال في كل اتجاه، ليصل إلى حدود كندا الحديثة.
وقال الباحثون إن قوة النيزك، الذي يبلغ وزنه 12 مليار طن، وصلت إلى 47 مليون قنبلة هيروشيما، ما أدى إلى طمس الحياة داخل دائرة نصف قطرها 100 كم.
وأطلقت قنبلة هيروشيما عام 1945 انفجارا يعادل 15 ألف طن من مادة “تي إن تي”، ما يعني أن النيزك ضرب كوكبنا بقوة تعادل 705 مليارات طن من مادة “تي إن تي”.
وظلت فوهة الحفرة (عرضها 30 كم) الناجمة عن الحدث، مخفية لمدة لا تقل عن 12 ألف سنة تحت Hiawatha Glacier، في شمال غرب غرينلاند النائية، على الرغم من أن الباحثين لم يحددوا تاريخا قاطعا للحدث. ويمكن أن يعود إلى ثلاثة ملايين عام، عندما بدأت الطبقة الجليدية بالظهور بالفعل في غرينلاند.
وحُددت الفوهة ببيانات جُمعت بين عامي 1997 و2014، ليتم استكمالها في عام 2016 باستخدام شكل متقدم من الرادار.
وقال المؤلف المشارك في الدراسة، الدكتور جون بادين، عالم الكمبيوتر في جامعة كنساس: “لقد جمعنا الكثير من بيانات الرادار على مدى العقدين الماضيين. وجمع علماء المياه الجليدية هذه البيانات لإنتاج خرائط لما هو موجود تحت جليد غرينلاند”.
وعندما نظر الباحثون الدنماركيون إلى الخريطة ورأوا ما يشبه الفوهة الكبيرة تحت الغطاء الجليدي، مع التركيز على صور الأقمار الاصطناعية، رصدوا شكلا دائريا على حافة الغطاء الجليدي.
ويبدو أن آثار النيزك ظلت على شكلها منذ ذلك الحين، بعد دفنها تحت الجليد بأكثر من كم واحد.
وتم اكتشاف الحفرة لأول مرة في يوليو 2015، عندما وجد باحثون في التاريخ الطبيعي في جامعة كوبنهاغن، منطقة مكتظة تحت النهر الجليدي أثناء تفقد خريطة جديدة للخصائص الفيزيائية.
ثم أجرت طائرة بحث أحدث قياسات الرادار الجليدي، التي كشفت عن الحفرة الضخمة بالتفصيل. ودرس الباحثون حجم وشكل الحفرة، للتنبؤ بتأثير النيزك.
وقال البروفيسور، كيرت كجاير، وهو باحث مشارك إن الانفجار سيكون له تأثير مدمر، حيث كان عنيفا جدا وقادر على قتل أي شيء في المنطقة، على بعد 100 كم من سقوط النيزك”.
وكان للانفجار تأثير دائم، لأنه أدى إلى ذوبان مساحات من الغطاء الجليدي في غرينلاند، ما تسبب في حدوث سيل من المياه العذبة إلى مضيق “Nares Strait”، بين كندا وغرينلاند.
وسمحت التحاليل الكيميائية التي أجريت في جامعة Cardiff، برسم صورة لنوع الجسم القادر على التسبب بالدمار الحاصل، وقاسوا الرسوبيات من نهر يصب مباشرة في النهر الجليدي، وبحثوا عن علامات للمعادن تشير إلى أنها تعود إلى نيزك قديم.
وتم العثور على عدد من النيازك الحديدية، بما في ذلك شظية محفوظة في المتحف الجيولوجي في كوبنهاغن، في المنطقة المحيطة بـ “Cape York”، ما دفع الباحثين إلى الاعتقاد بأن المنطقة شهدت حدثا مدمرا دون شك، وهي النظرية التي تفتقر إلى الأدلة حتى الآن.
ونُشرت النتائج في مجلة “Science Advances”.
المصدر: ديلي ميل
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مارس 15, 2025 at 1:21 م
How To Get A Better Jawline: Exercises And Tips
# How to Get a Better Jawline: Exercises and Tips
Achieving a sharper, more defined jawline can enhance your facial
symmetry and overall appearance. Whether through targeted exercises or lifestyle adjustments,
there are numerous strategies to help you
achieve your goal. Let’s explore the essential methods to sculpt a better jawline below.
## Summary of How to Achieve a Chiseled Jaw
A chiseled jawline is often associated with strength and athleticism.
To achieve it, focus on strengthening and toning the muscles in your lower face and neck.
Incorporate exercises like jaw clenching, fish face workouts, and facial yoga into your routine.
## What Does It Take to Actually Gain a Sharper
Jawline?
Consistency is key. Regular exercise, proper nutrition, and reduced stress
levels are crucial for seeing noticeable results.
Avoid processed foods high in sodium, as they can contribute to
bloating and water retention, which may hinder your progress.
## Sculpt Your Jawline: Exercises & Mewing.coach App
Start with fundamental exercises to strengthen the muscles around your jaw and
neck. The **mewing technique**, which involves proper tongue posture, is an excellent starting point.
Pair these exercises with tools like the **Mewing.app** for guided workouts designed
to target your facial muscles effectively.
## Tailored Exercise Plan
Customize your workout based on your individual needs.
For example, if you’re looking to reduce puffiness in your
cheeks or define your jawline, opt for exercises that work the lateral pterygoid muscles.
### Visual Progress Tracker
To stay motivated, use progress photos taken before and after your routine.
This visual reminder can help you see improvements over time.
## Maximize Definition: Jaw Exercisers & Lifestyle
Enhance your workouts with devices like jawline stimulators or resistance bands.
These tools provide additional resistance, helping you achieve greater definition in your jaw area.
### Effective Combination Routine
Combine exercises that target different muscle
groups for a well-rounded approach. For instance, perform **lion’s breath**
to engage the lower face muscles while incorporating **chewing gum
exercises** to strengthen the jaw and neck muscles.
## Success Showcase
Over time, you’ll notice changes in your jawline as your muscles tone up.
Share your journey on social media or keep a journal to
document your progress.
## Nighttime Enhancement: Mouth Tape, Mouthpiece, and Night Guards
Wearing a mouth tape or mouthpiece while sleeping can help align your jaw and encourage muscle
development. Consider investing in a custom night guard
if you grind your teeth or haveTMJ issues.
### Nightly Jawline Care Tips
Maintain your progress by following nighttime routines that support your goals.
Avoid snacking late at night, as this can lead to bloating and undo your hard work.
## Transformative Nights Results
Consistent use of mouth tapes or bite guards can lead to noticeable changes
in your jawline over time. Pair these with your daytime exercises
for the best results.
## Comprehensive Approach: Advanced Treatments & Facial Massage
For those seeking more definitive results, explore advanced treatments like
facial massage or injectables. These methods can provide immediate results and enhance your natural beauty.
### Advanced Enhancement Strategy
Consider a combination of treatments tailored to your specific needs.
For example, if you have excess fat in the jaw area, fat transfer surgery
might be a good option.
## Jawline Exercises
Begin with fundamental exercises to strengthen and tone your
jaw muscles:
– **Jaw Clenching**: Squeeze your jaw muscles for 5 seconds
at a time, holding up to 10 repetitions.
– **Fish Face Exercise**: Puckering your lips while protruding your tongue to target facial muscles.
– **Tongue Twisters**: Practice exercises like “Stick out your tongue, touch the tip with your teeth” to improve tongue control and muscle engagement.
## Mewing – Proper Tongue Posture Technique
Master the mewing technique by keeping your tongue against
the roof of your mouth while smiling or pouting.
This exercise strengthens facial muscles and improves jawline definition.
## Chin-Ups – Engages Jawline Muscles
Perform chin-ups using a pulling bar to engage the muscles in your
neck and jawline. Aim for 3 sets of 8-12 reps to build strength and tone.
## Neck Curls – Strengthens the Front Neck Muscles
Use a resistance band or dumbbell to perform neck curls, targeting the front neck muscles for a slimmer appearance.
## Lion’s Breath – Yoga Technique for Facial Muscles
Inhale deeply through your nose while exhaling forcefully
from your mouth in short bursts, engaging your facial and
jawline muscles.
## Mouthwash Technique – Tones the Jawline and Chin Area
Use a stimulating mouthwash or rinse after workouts to keep your jaw and chin area toned and fresh.
## Smile Exercises – Engages Multiple Facial Muscles
Smile as widely as possible for 5 seconds, then relax. Repeat several times to engage facial muscles and improve
jawline definition.
## Tongue Twisters
Practice exercises like “Tongue over teeth” or “Rabbit ears,”
which help tone and align your tongue, indirectly
benefiting your jawline.
## Before & After Jawline Exercises Transformations
Seeing real transformations can be motivating. Share before-and-after photos to inspire others and track your own progress.
## Jaw Exercisers and Enhancers
Invest in tools like the **Chewing Gum Trainer** or **Electric Stimulators** for targeted workout routines.
These devices provide resistance that helps in toning and shaping your jawline.
## Chewing Hard Gum
Chew gum regularly to engage jaw muscles, especially before mirrors or while waiting.
This simple habit can contribute to a sharper jawline over time.
## Most Effective Types of Gums
Choose high-quality, sugar-free gums with resistance settings to
maximize the workout for your jaw and neck muscles.
## Jawline Chew Toys
Explore toys like **Resistant Bands** or **Chewing Toys** designed to strengthen facial muscles.
### Types of Facial Resistance Bands
Use bands with varying resistance levels to target different muscle groups in your face and neck.
## Jawline Shaping Masks
Apply shaping masks to reduce puffiness and contour the jawline while you sleep.
### Types of Jawline Shaping Masks
Look for products that use pressure or heat therapy to help with facial contours.
## Custom-fit Jaw Exercisers
These devices are designed to fit your mouth perfectly, providing maximum effectiveness during workouts.
### Types of Custom-fit Jaw Exercisers
Choose from adjustable or moldable options based on your specific needs.
## Electric Jawline Stimulators
Use electric stimulators for targeted muscle engagement, providing a more intense workout in less time.
## Lifestyle Changes
Incorporate lifestyle adjustments to support your goals:
### Balanced Diet
Focus on nutrient-dense foods rich in vitamins and minerals to fuel your
workouts and promote healthy muscle development.
#### Your Dietary Cheat Sheet to Gain the Most Facial Muscle in the
Shortest Period of Time
– Protein-rich foods like eggs, lean meats, and legumes.
– Leafy greens for essential nutrients.
– Healthy fats from avocados and nuts.
– Whole grains for sustained energy.
### Regular Exercise
Combine jawline exercises with full-body workouts to
improve overall fitness and support your facial goals.
#### Your Workout Guide for Jawline Definition
– Perform compound movements like squats and push-ups, which engage multiple muscle groups.
– Incorporate core exercises to maintain a strong posture, which can help define your jawline.
### Adequate Sleep
Sleep is crucial for muscle recovery and growth. Aim for 7-9 hours per night to support your body’s natural
healing processes.
#### Your Sleep Routine for Jawline Definition
– Establish a consistent bedtime routine.
– Create a relaxing environment to promote better
sleep quality.
### Reduced Sodium Intake
Limit processed foods and salty snacks, as excess
sodium can lead to water retention and bloating.
## Stress Management
Chronic stress can cause your body to store fat, including around your jawline.
Manage stress through meditation, deep breathing, or hobbies like yoga.
#### Your Stress-Relief Plan for Jawline Definition
– Practice mindfulness daily.
– Engage in calming activities like reading or taking walks.
– Maintain a healthy work-life balance.
## Facial Massage
A gentle facial massage can help reduce puffiness and promote
blood circulation, contributing to a more defined jawline.
#### Your Facial Massage Routine for Jawline Definition
– Use firm strokes from the earlobe up to your jawline.
– Gently press on the sides of your face to release tension.
– Finish with circular motions at the center
of your face.
## Surgical Intervention
For those seeking more dramatic results, consider surgical options like:
### Liposuction
Remove excess fat deposits in your neck and jaw area through suction-assisted liposurgery.
#### Chin Implants
Enhance your jawline with an implant to create a more
balanced and chiseled appearance.
#### Neck Lift
Surgical removal of excess skin and fat in the neck can reduce sagging and provide a slimmer look.
#### Mandibular Angle Enhancement
Adjustments to the angle of your jaw can provide a more pronounced jawline.
#### Genioplasty
Reconstruct or augment the lower jaw to improve symmetry and definition.
#### Fat Transfer Surgery
Take fat from one area of your body and transfer it to your face to add volume and contour your jawline.
## Advanced Dermatological Treatments
Explore non-invasive treatments like:
### Laser Lipolysis
Use targeted laser treatments to eliminate stubborn fat in the jaw and
neck region.
#### Ultherapy
This treatment uses ultrasound energy to stimulate
collagen production, tightening skin and improving
facial contours.
#### Kybella Injections
Reduce submental fullness by injecting a natural substance that acts as a fat inhibitor.
#### Thread Lifts
Surgically place threads in your skin to lift and tighten sagging tissues around your jawline.
#### Chemical Peels
Use peels to remove dead skin cells, revealing smoother and more defined skin.
## Cosmetic Enhancements for Jawline Sculpting
Consider injectables like:
### Dermal Fillers
Add volume to hollow areas under your eyes or along your jawline for a more full-faced look.
#### Botox
Relax facial muscles that may cause lines or sagging, contributing to
a sharper appearance.
#### Fat Grafting
Transfer fat from one area of your body to your face for
natural volume and contour.
## Style Tips Highlighting the Jawline Definition
Once your jawline is well-defined, enhance your look with these fashion tips:
### Strategic Beard Shaping
Shave or trim your beard to complement your jawline, creating a balanced and
sharp appearance.
#### Hairstyles that Elongate the Neck
Choose styles like ponytails or buns that
draw attention upward, elongating your neck and emphasizing your jawline.
#### Collar Styles
Select collars that are narrow at the base to highlight your jawline while adding structure to your
outfit.
#### Accessory Positioning
Place statement accessories near your jawline, such as earrings positioned
higher on your ears, to draw focus to your
face.
## Psychological Aspects of Facial Aesthetics
Positive self-image practices and social perception strategies
can significantly impact how you feel about your jawline.
#### Positive Self-Image Practices
Practice affirmations daily and set personal goals that
celebrate your unique beauty.
#### Facial Expression Awareness
Be mindful of how you carry yourself to avoid lines and creases from stress or poor posture.
#### Social Perception Strategies
Conquer self-conscious feelings by focusing on the confidence boost a
better jawline can bring, rather than external opinions.
#### Coping Mechanisms for Aesthetic Concerns
If you’re insecure about your jawline, remind yourself that beauty is subjective and
unique to each person.
## Innovative Tech Solutions for Jawline
Leverage technology to enhance your workouts or recovery process:
### AI-Driven Facial Fitness Apps
Use apps like **Mewing.app** for personalized workout plans based
on your facial anatomy.
#### Smart Mirrors
These mirrors provide feedback on your form during exercises, offering guidance
and motivation.
#### VR Facial Exercise Games
Turn workout routines into a fun experience with virtual reality games that focus on jawline
exercises.
#### Wearable Electromuscular Stimulation Devices
These devices send electrical impulses to stimulate
muscle contraction during workouts, enhancing effectiveness.
#### Facial Scanning Apps
Use apps that analyze your face and provide personalized recommendations for
improvement.
## Facial Anatomy and Genetics: Understand What’s
Achievable
While genetics play a role in facial structure, there are still ways to enhance
your jawline through the methods mentioned
above. Everyone can achieve some level of definition with
dedication and the right approach.
## Long-term Care to Maintain the Defined Jawline
Once you’ve achieved your goal, maintain it by continuing with regular exercises and healthy habits.
### Common Misconceptions About Jawline Enhancement
Many believe that genetics determine jawline success, but
consistent effort can lead to visible results over time.
## Safety Considerations and Potential Health Risks
Consult a healthcare professional before undergoing any invasive treatments to ensure safety and avoid complications.
## FAQ
**Your Jawline, Your Masterpiece**
Your jawline is a unique feature that reflects your individuality.
Whether through natural effort or medical intervention, it’s possible to achieve a
jawline that makes you feel confident and beautiful.
—
By following these tips and staying committed to your goals, you can achieve a more defined and attractive jawline.
Celebrate your progress and continue to focus on self-care
for long-term results.
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