What are the 4 physics of flight?
These same four forces help an airplane fly. The four forces are lift, thrust, drag, and weight.
The four forces making up the principle of flight are lift, weight, drag, and thrust. The forces all interact together to determine an airplane's trajectory. Lift and weight are opposing forces, as are thrust and drag. All are equally important, and they must be balanced to maintain level flight.
Maneuvering of the airplane is generally divided into four flight fundamentals; (1) climbs, (2) descents, (3) turns, and straight and level. All controlled flight consists of either one, or a combination, of these basic maneuvers.
Forces and carrier particles
There are four fundamental forces at work in the universe: the strong force, the weak force, the electromagnetic force, and the gravitational force.
But it wasn't until 1799 that George Cayley envisioned of a fixed-wing aircraft and officially identified the four fundamental forces of flight that we know today: lift, thrust, drag, and weight.
Operational Aspects – cost, performance, reliability and maintainability are important features of aircraft design as well as advanced techniques such as Integrated Vehicle Health Management (IVHM).
Like all planes, paper airplanes experience four forces: gravity, thrust, lift, and drag. Simple changes, like wing size, body weight, and throw power can significantly alter the forces your plane experiences.
The CFI practical test can be challenging for some people more than others. Generally, while the transition to flying from the right seat is simple, many CFI applicants who are very good, safe pilots struggle initially to practice teaching and explaining concepts and maneuvers.
Do you want to be immediately hired after you receive your Commercial rating? You should consider becoming a Certified Flight Instructor or better yet, a Multi Engine Instructor.
The national average salary for a Certified Flight Instructor is $53,106 in United States.
What are the 4 universal forces?
fundamental force, also called fundamental interaction, in physics, any of the four basic forces—gravitational, electromagnetic, strong, and weak—that govern how objects or particles interact and how certain particles decay. All the known forces of nature can be traced to these fundamental forces.
According to the present understanding, there are four fundamental interactions or forces: gravitation, electromagnetism, the weak interaction, and the strong interaction.

The Four Fundamental Forces of Nature are Gravitational force, Weak Nuclear force, Electromagnetic force and Strong Nuclear force. The weak and strong forces are effective only over a very short range and dominate only at the level of subatomic particles.
- Weight is the force of gravity. ...
- Lift is the force that acts at a right angle to the direction of motion through the air. ...
- Thrust is the force that propels a flying machine in the direction of motion. ...
- Drag is the force that acts opposite to the direction of motion.
The faster an airplane moves, the more lift there is. When the force of lift is greater than the force of gravity, the airplane is able to fly, and because of thrust, the airplane is able to move forward in flight. According to Newton's third law of motion, the action of the wings moving through the air creates lift.
- Dihedral.
- Sweepback.
- Keel effect.
- Weight distribution.
A flight plan contains such of the following information as is relevant to the flight: Aircraft identification. Flight rules and type of flight. Number and type(s) of aircraft and wake turbulence category.
The Main Pillars of Aviation
However, there are a few different sectors of aviation, with three being the main pillars that uphold the aviation industry as a whole: commercial, general, and military aviation.
Drag and gravity are forces that act on anything lifted from the earth and moved through the air. Thrust and lift are artificially created forces used to overcome the forces of nature and enable an airplane to fly. Airplane engine and propeller combination is designed to produce thrust to overcome drag.
air traffic control separation standards; aircraft characteristics; runway configuration; movement mix; and air traffic control operational strategies. Other factors which influence runway capacity, eg safety, weather, noise, etc, can be shown to act through one or more of these five factors.
What is the failure rate for CFI?
The data shows that the pass rate for initial CFI certificates has historically hovered somewhere just shy of the 70 percent rate. This is certainly much higher than many of the myths would have us believe. The pilot community seems to spread the notion that most CFI practical test applicants fail on the first try.
To become an airline pilot, it takes two years to gain the required 1,500 hours flight time.
Prepared pilots are more likely to pass. In 2021, FAA data showed that 78% of all PPL pilots passed on their first attempt. In that same year, 79.5% of pilots passed their commercial pilot checkride, and the pass rate for CFI checkrides was 77.9%.
Requirements: Applicant must hold an FAA Third Class Medical and Commercial Pilot Certificate, single engine land with instrument rating or ATP certificate. It is not necessary to hold a CFI or CFII to begin MEI training.
You do not need an instrument rating to become a Certified Flight Instructor, as the regulations you quoted state. You just have to be rated for the type in which you are instructing.
No instrument, commercial training unless the CFI is a CFII
A CFI cannot provide any and all training on a basic initial CFI certificate. To provide instrument training, other than the basic training for example in a private pilot certificate, the CFI must be qualified as an “instrument” instructor also.
- Helicopter Pilot. Salary range: $52,000-$115,000 per year. ...
- Private Pilot. Salary range: $52,000-$100,000 per year. ...
- Corporate Pilot. Salary range: $55,000-$100,000 per year. ...
- Chief Pilot. Salary range: $64,000-$100,000 per year. ...
- Assistant Chief Pilot. ...
- Air Charter Pilot. ...
- Airline Pilot. ...
- Commercial Pilot.
$129,395. How accurate does $129,395 look to you?
The salary trajectory of a Fighter Pilot ranges between locations and employers. The salary starts at $98,229 per year and goes up to $125,719 per year for the highest level of seniority.
In order to gain an understand- ing of flight, it is important to understand the forces of flight (lift, weight, drag, and thrust), the Bernoulli Principle, and Newton's first and third laws of motion.
What are the four speeds of flight?
Supersonic flight is one of the four speeds of flight. They are called the regimes of flight. The regimes of flight are subsonic, transonic, supersonic and hypersonic.
Like an aircraft, a model rocket is subjected to the forces of weight, thrust, drag, and lift.
There are four types of airline classes offered on planes:
Economy class. Premium economy class. Business class. First class.
Sure, there are hypersonic weapons, most of them in testing stages, but to date not a single human was capable of reaching Mach 10 in an aircraft while inside the atmosphere.
In flight, a rocket is subjected to four forces; weight, thrust, and the aerodynamic forces, lift and drag. The magnitude of the weight depends on the mass of all of the parts of the rocket.
The four forces of flight include drag, thrust, lift, and weight, and they greatly affect an airplane. Drag is the force that opposes the forward movement of an airplane, while thrust is the force that pushes an airplane in the forward direction.
The ailerons, elevator (or stabilator), and rudder constitute the primary control system and are required to control an aircraft safely during flight.
References
- https://www.frederickimplant.com/most-important-teeth/
- https://www.nhsinform.scot/healthy-living/dental-health/your-teeth/everything-you-need-to-know-about-teeth
- https://www.temeculafacialoralsurgery.com/what-difficult-complex-surgical-tooth-extraction/
- https://www.healthline.com/health/periodontal-pockets
- https://www.ada.org/-/media/project/ada-organization/ada/ada-org/files/publications/cdt/v1__d9110palliativetreatmentguide_2023jan.pdf?rev=d4644f957e3d48308855938848731b2f&hash=CC35594B3A03708716435213F601374E
- https://www.carolinasmilesfamilydentistry.com/blog/how-long-porcelain-crowns-last/
- https://www.centeronedental.com/blog/2020/09/29/oral-health-purpose-of-teeth/
- https://www.sharecare.com/health/common-dental-procedures/dental-terms-use-numbers-letters
- https://www.agd.org/docs/default-source/self-instruction-(gendent)/gendent_jf15_saraghi.pdf?sfvrsn=72767ab1_0
- https://jamesswickdds.com/blog/2017/5/10/whats-it-mean-when-my-dentist-pokes-my-gums-and-says-numbers
- https://www.carolinapedo.com/blog/2021/02/teeth-one-year-old
- https://www.thehealthyjournal.com/faq/can-a-human-go-mach-10
- https://www.winthropsmiles.com/blog/dentist-know-floss/
- https://www.faa.gov/pilot-mental-fitness
- https://www.grc.nasa.gov/www/k-12/VirtualAero/BottleRocket/airplane/rktfor.html
- https://www.sciencefriday.com/educational-resources/paper-airplane-flight-challenge/
- https://lakeviewdentist.com/blog/general-dentistry/periodontal-gum-chart/
- https://www.bigbend.edu/wp-content/uploads/PRINCIPLES-OF-FLIGHT.pptx
- https://www.dentaleconomics.com/practice/overhead-and-profitability/article/16394366/the-8020-rule-in-dentistry
- https://www.faa.gov/pilots/safety/pilotsafetybrochures/media/lasereye_ii.pdf
- https://optical-academy.com/blog/different-vision-types/
- https://www.thepilotguys.com/blog/airline-pilot-salary
- https://concorddentalgroup.com/7-foods-to-eat-for-healthy-gums-foods-to-avoid-for-receding-gums/
- https://www.nvisioncenters.com/improve-eyesight/20-10-vision/
- https://harrisdentalboutique.com.au/having-a-tooth-removed/
- https://www.thrustflight.com/how-to-study-to-become-pilot/
- https://parkslopeeye.com/what-is-low-vision-2/
- https://pubmed.ncbi.nlm.nih.gov/22616215/
- https://medium.com/faa/pilots-with-attention-deficit-hyperactivity-disorder-adhd-6518967ac46e
- https://www.bitre.gov.au/sites/default/files/op_050.pdf
- https://herschsmiles.com/cc-5dbc7f0f53754/
- https://home.cern/science/physics/standard-model
- https://www.dentistrywithaheart.com/blog/how-many-molars-do-you-need/
- https://www.faa.gov/faq/what-maximum-age-pilot-can-fly-airplane
- https://www.healthline.com/health/deciduous-teeth
- https://www.allaboutvision.com/eyeglasses/faq/pilot-glasses.htm
- https://www.gregskeensdds.com/how-are-your-teeth-numbered-understanding-your-dental-chart/
- https://howardfamilydental.com/why-does-the-dentist-poke-my-gums-during-my-checkup/
- https://www.gotoapro.org/missing-teeth/
- https://flyosm.com/blog/medical-requirements-for-pilots-what-gives/
- https://www.dayodental.com/teeth-numbers-and-teeth-names/
- https://www.yourperfectteeth.com/latest-news/gum-score-mean/
- https://www.laurichdentistry.com/4-types-of-wisdom-teeth-impactions/
- https://aviation.stackexchange.com/questions/72399/does-a-cfi-need-an-instrument-rating
- https://www.aeroclass.org/types-of-flights/
- https://www.mayoclinic.org/diseases-conditions/wisdom-teeth/expert-answers/wisdom-teeth-removal/faq-20058558
- https://epicflightacademy.com/airline-pilot-salary/
- https://www.palmerdmd.com/meridian-tooth-chart.html
- https://www.pampers.com/en-us/baby/teething/article/baby-teeth-chart
- https://www.mexdental.com/tooth-numbers-and-tooth-names/
- https://www.stonebriarfaces.com/blog/wisdom-teeth-a-guide-to-your-third-molars/
- https://www.nasa.gov/sites/default/files/atoms/files/bernoulli_principle_k-4.pdf
- https://cdeworld.com/courses/20488-rules-of-six-diagnostic-and-therapeutic-guidelines-for-single-tooth-implant-success
- https://nepadentalwest.com/how-many-dental-fillings-can-be-done-at-once/
- https://www.skybrary.aero/articles/flight-plan
- https://hurstpediatricdentistry.com/2021/11/08/what-is-a-supernumerary-tooth/
- https://www.riverrockdds.com/blog/root-canal-vs-extraction-whats-the-difference/
- https://www.icd10data.com/ICD10CM/Codes/K00-K95/K00-K14/K08-/K08.424
- https://baatraining.com/blog/airline-pilot-salary-how-much-pilots-earn/
- https://sabkadentist.com/how-to-reduce-gum-pockets/
- https://www.faa.gov/ame_guide/app_process/exam_tech/et/31-34/mv
- https://www.scienceworld.ca/resource/four-forces-flight/
- https://davisoralhealth.com/p/dentist-Davis-CA-The-Truth-About-Teeth-p12072.asp
- https://www.naa.edu/sectors-of-aviation/
- https://www.corsodyl.co.uk/advice/can-receding-gums-grow-back/
- https://rx-safety.com/eyeglasses-faq/
- https://www.wccaviation.com/blogs/you-dont-need-2020-vision-to-become-a-pilot-heres-why
- https://innovativeoralsurgery.com/oral-maxillofacial-surgery-bucks-county/wisdom-teeth/recovery/
- https://www.nidcr.nih.gov/research/data-statistics/tooth-loss/seniors
- https://www.churchfielddental.co.uk/dental-jargon
- https://www.aopa.org/training-and-safety/flight-schools/flight-school-business/newsletter/2022/march/28/tracking-pass-rates
- https://www.dvm360.com/view/oral-pathology-dental-charting-part-i-proceedings
- https://www.clearias.com/four-fundamental-forces-of-nature/
- https://pilotinstitute.com/principles-of-flight/
- https://www.cranfield.ac.uk/academic-disciplines/aircraft-design
- https://www.southfloridadentalcare.com/what-those-numbers-the-dentist-calls-out-really-mean/
- https://my.clevelandclinic.org/health/diseases/21628-fractured-tooth-cracked-tooth
- https://www.brunodentistry.com/holistic-dentist-in-austin-2/
- https://northshoredentalclinic.com.au/treatments/general-dentistry/periodontal-disease-gum-disease/
- https://www.dentistsonthegoldcoast.com.au/how-many-teeth-can-be-extracted-at-once/
- https://www.baltimorewaterfrontdental.com/post/can-you-reverse-gum-disease-gingivitis-periodontitis
- https://www.tlccoralgables.com/2022/10/07/what-you-need-to-know-about-lasik-for-astigmatism/
- https://www.thrustflight.com/how-much-do-pilots-make/
- https://buildinggreatsmiles.com/blog/what-tooth-number-is-this-tooth/
- https://www.aspenwooddental.com/blog/what-happens-if-you-dont-replace-missing-teeth
- https://www.regiondentalcare.com/blog/2017/11/19/replacing-missing-back-teeth/
- https://oaktrust.library.tamu.edu/handle/1969.1/156920
- https://www.news-medical.net/health/Universal-Numbering-System-for-Teeth.aspx
- https://www.nhs.uk/conditions/wisdom-tooth-removal/what-happens/
- https://www.faa.gov/ame_guide/app_process/exam_tech/item47/amd
- https://www.healthline.com/health/wisdom-teeth-recovery
- https://www.healthline.com/health/dental-and-oral-health/when-to-worry-about-baby-teeth-not-coming-in
- https://www.mvalleyoralsurgery.com/blog/5-reasons-to-replace-a-back-molar-even-if-you-cant-see-it/
- https://www.mccarldental.com/blog/tooth-numbering/
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5319547/
- https://santanoralsurgery.com/p/BLOG-79452-1899.12.30-How-Long-Does-a-Wisdom-Tooth-Extraction-Take-p.asp
- https://atpflightschool.com/become-a-pilot/airline-career/how-long-to-become-a-pilot.html
- https://www.paragonflight.com/professional-commercial/certified-flight-instructor-cfi-cfii-mei.html
- https://www.ziprecruiter.com/g/Highest-Paying-Pilot-Jobs
- https://smile-365.com/evaluate-your-oral-hygiene-skills-using-a-plaque-scoring-test/
- https://www.defense.gov/Multimedia/Experience/Top-Gun-The-Edge-of-Aviation/
- https://www.nasa.gov/audience/forstudents/5-8/features/nasa-knows/what-is-supersonic-flight-58.html
- https://radomilefamilydental.com/improve-gum-health/
- https://simpleflying.com/commercial-pilot-retirement-age/
- https://www.byte.com/community/resources/article/understanding-dental-lingo-teeth-numbers-quadrants/
- https://www.warbyparker.com/learn/can-you-be-a-pilot-with-glasses
- https://www.torranceoralsurgery.com/procedures/wisdom-teeth/
- https://www.glassdoor.com/Salaries/f-16-fighter-pilot-salary-SRCH_KO0,18.htm
- https://navalofficerrecruiter.com/can-navy-pilots-wear-glasses/
- https://www.faa.gov/faq/if-i-am-deaf-can-i-obtain-pilot-certificate
- https://www.greatneckdentalassociates.com/10-nerdy-facts-about-wisdom-teeth/
- https://www.webmd.com/oral-health/guide/dental-health-your-childs-teeth
- https://www.datamyne.com/hts/33/3306900000
- https://pocketdentistry.com/pediatric-dentistry-for-the-general-practitioners/
- http://www.letu.edu/trending/content/how-long-does-it-take-become-pilot
- https://howthingsfly.si.edu/forces-flight/four-forces
- https://www.airspacedoc.com/alcohol-the-pilot-and-the-faa/
- https://encoredental.ca/the-consequences-of-missing-a-tooth/
- https://www.proopticalboston.com/2023/01/12/what-does-it-mean-to-have-20-40-vision/
- https://www.familydentalcare.com/why-experts-now-say-not-to-extract-your-wisdom-teeth/
- https://www.periodontal.com/how-long-do-dental-implants-last/
- https://ialvs.com/ways-we-can-help/i-cant-see-anywhere-close-to-20-20-vision-can-an-ialvs-doctor-help-me/
- https://www.drsreeni.com/how-long-does-wisdom-teeth-removal-take/
- https://www.glassdoor.com/Salary/US-Air-Force-Fighter-Pilot-Salaries-E41283_D_KO13,26.htm
- https://seeitourway.org/blind-adaptations/
- https://citysmiledental.co.nz/dental-crowns/
- https://simpleflying.com/becoming-a-pilot-us/
- https://www.mayoclinic.org/tests-procedures/wisdom-tooth-extraction/about/pac-20395268
- https://www.kingskyfa.com/post/why-some-people-fail-pilot-training/
- https://www.britannica.com/science/fundamental-interaction
- https://www.modestoeyecenter.com/lasik/top-gun-lasik-surgery-ilasik/
- https://naturaldentistassociates.com/keeping-your-wisdom-teeth/
- https://espdental.com/blog/can-you-get-a-temporary-tooth-while-waiting-for-an-implant/
- http://ophthalmology.pitt.edu/vision-impairment/what-vision-impairment
- https://hartzellprop.com/aerodynamics-and-the-4-forces-of-flight/
- https://epicflightacademy.com/flight-school-faq/are-strong-math-skills-necessary-to-become-a-pilot/
- https://www.oralsurgeryteam.com/post/what-should-i-do-about-my-periodontal-pockets
- https://www.grc.nasa.gov/www/k-12/rocket/rktfor.html
- https://www.bixbyknollsdental.com/this-is-what-happens-if-you-dont-get-wisdom-teeth-removed/
- https://maccarosmiles.com/blog/the-rule-of-2s-for-oral-health
- https://testbook.com/question-answer/the-lowest-height-above-the-runway-where-the-pilot--5f16f68e57b39f0d05dfa444
- https://www.drericyao.com/Blog/Post/What-Toothpaste-is-Good-to-Help-Prevent-Gum-Disease
- https://www.nhs.uk/conditions/baby/babys-development/teething/baby-teething-symptoms/
- https://www.dentalartsofsalem.com/about-all-on-4s
- https://www.eoperio.com.au/gum-disease/stages
- https://www.123dentist.com/understanding-dental-lingo/
- https://my.clevelandclinic.org/health/treatments/21759-root-canal
- https://study.com/learn/lesson/four-forces-flight-drag-lift.html
- https://dentalcarekokomo.com/news/why-do-dentists-and-assistants-call-out-numbers-during-a-cleaning-id-9
- https://www.midlothiandentalcenter.com/blog/8-dental-terms-youve-probably-heard-but-never-understood
- https://www.medicalnewstoday.com/articles/326022
- https://my.clevelandclinic.org/health/body/23223-wisdom-teeth
- https://veteranshelpgroup.com/va-disability-ratings-for-teeth/
- https://www.twkidsdentist.com/baby-tooth-arrival-whats-normal-whats-not/
- https://mydentistupland.com/blog/baby-teeth-order-pain-and-remedies/
- https://dentalvibe.com/faq/can-you-live-without-a-molar-tooth/
- https://www.solihulldentalcentre.co.uk/blog/what-options-do-you-have-to-replace-missing-teeth/
- https://sacramentofamilydentist.com/my-sacramento-dentist-pokes-my-gums-and-says-numbers-what-does-it-mean/
- https://www.faa.gov/ame_guide/media/synopsis.pdf
- https://intownsmilestudio.com/2017/05/07/what-are-all-the-numbers-about/
- https://www.aviationmedicine.com/article/vision-and-faa-standards/
- https://www.betterhealth.vic.gov.au/health/conditionsandtreatments/teeth-development-in-children
- https://www.theperiodontalgroup.com/procedures/cleanings-prevention/how-to-properly-brush-floss/
- https://www.cignadentalplans.com/dental-care/fix-my-broken-teeth
- https://www.glassdoor.co.in/Salaries/us-certified-flight-instructor-salary-SRCH_IL.0,2_IN1_KO3,30.htm
- https://www.nhs.uk/conditions/wisdom-tooth-removal/
- https://en.wikipedia.org/wiki/Visual_acuity
- https://www.airforce.com/careers/aviation-and-flight/pilot
- https://faithfulguardianaviation.com/course/cfi-airplane-initial/lessons/fundamentals-of-flight/
- https://www.orthodonticexprts.com/blog/orthodontic-teeth-numbers/
- https://www.nasa.gov/audience/foreducators/k-4/features/F_Four_Forces_of_Flight.html
- https://www.dentalcarealliance.net/dental-practice-transitions/how-much-does-the-tooth-fairy-pay-per-tooth-in-your-state/
- https://fortsondentistry.com/blog/understanding-the-tooth-number-chart/
- https://www.portwaydentistry.ca/post/which-teeth-are-more-susceptible-to-decay
- https://www.mayoclinic.org/healthy-lifestyle/childrens-health/expert-answers/baby-teeth/faq-20058532
- https://www.childrensdentalcare.net/ages-2-5/
- https://www.dentistjustforkids.com/havent-childs-baby-teeth-come/
- https://centurystonedental.com/how-long-does-wisdom-tooth-growing-pain-last/
- https://kraffeye.com/blog/vision-and-aviation-consider-lasik-for-pilots
- https://www.dentaly.org/us/percent-population-missing-teeth/
- https://www.thrustflight.com/become-pilot-color-blind/
- https://www.kingskyfa.com/post/is-there-a-height-requirement-to-be-a-pilot/
- https://pilotinstitute.com/can-pilots-have-tattoos/
- https://atpflightschool.com/become-a-pilot/airline-career/commercial-pilot-salary.html
- https://www.piper.com/blog/how-to-become-a-pilot/
- https://thebeardandthewonderful.com/blogs/how-to-guides/can-pilots-have-beards
- https://www.newswise.com/articles/flabby-gums-are-worse-than-flabby-abs-says-loyola-dentist
- https://familydentalclinic.com.au/news/is-wisdom-teeth-removal-painful/
- https://royalimplant.com/blogs/how-many-teeth-do-we-require-to-eat/
- https://thepilotlawyer.com/faa-medical-denied-because-of-adderall/
- https://www.aopa.org/go-fly/medical-resources/health-conditions/vision/monocular-vision
- https://www.faa.gov/air_traffic/publications/atpubs/aip_html/part2_enr_section_1.15.html
- https://www.santamonicaflyers.com/is-becoming-a-pilot-worth-it/
- https://www.healthysmileslansingdentist.com/blog/2021/05/10/dangerous-missing-back-tooth/
- https://www.oralsurgeryofutah.com/2020/12/17/how-many-teeth-can-be-extracted-at-once/
- https://willmurphydentistry.co.uk/how-numbers-tell-you-about-gum-health/
- https://www.faa.gov/regulations_policies/handbooks_manuals/aviation/phak/media/08_phak_ch6.pdf
- https://en.wikipedia.org/wiki/Dental_notation
- https://www.springcypressdental.com/which-wisdom-teeth-are-harder-to-remove/
- https://kidtasticdental.com/baby-teeth-coming-in-out-of-order/
- https://northalabama.dentalassociatesnearme.com/general-dentist/the-best-mouthwash-for-periodontal-disease/
- https://epicflightacademy.com/checkrides/
- https://retinahi.com/mean-legally-blind/
- https://www.theperfectsmile.co.uk/cosmetic-dentistry/complete-care/abc-dentistry
- https://landing.redbirdflight.com/posts/initial-cfi-checkride
- http://www.santamonicaperio.com/blog/2021/7/29/what-is-the-best-way-to-treat-receding-gums/
- https://www.nhsbsa.nhs.uk/sites/default/files/2020-07/Dental_activity_errors_and_how_to_correct_them_July_2020_0.pdf
- https://www.aopa.org/training-and-safety/flight-schools/flight-school-business/newsletter/2019/october/15/common-mistakes-two
- https://www.eidebailly.com/insights/articles/2019/9/dental-coding
- https://dentalimpressionsofankeny.com/2012/03/ankeny-foust-teeth-functions/
- https://www.spidertracks.com/blog/shinji-one-eyed-pilot
- https://www.dentalcare.com/en-us/ce-courses/ce21/abbreviations-acronyms-and-initialisms
- https://www.dentalhealth.org/news/want-to-know-how-long-you-will-live-count-your-teeth
- https://www.nidcr.nih.gov/research/data-statistics/tooth-loss/adults
- https://en.wikipedia.org/wiki/Fundamental_interaction
- https://aag.aero/5-challenges-of-being-an-airline-pilot/
- https://ctipft.com/courses/flight-instructor-programs/multi-engine-instructor/
- https://www.tiogadental.com/blog/8signs-need-dentures/