Gravity

The force of garvity is a fundamental force causing every structure in the universe to be attracted to every other structure

Mechanical Forces84232p.800 water fountain motor force wind gravity potential energy kinetic energy gravitational force Cambridge Massachusetts Davidoff photography

Water Driven Mill

89045p water mill gravity force power river Disney World Magic Kingdom Davidoff photography

Strong Nuclear Force

This force is responsible for holding positively charged protons together in the nucleus of the atom superceding the repulsive forces of similalrly charged particles.

Strong Nuclear Forces

Positive Forces –  Attraction in the Nucleus

84154b05.800 positive and negative extreme states black and white strong nuclear forces Davidoff art Davidoff MD

Gravity

Reflection73417pb01 mirror image forces through reflection water plants reflection opposites ying yang water drops gravity flower Purity Springs New Hampshire Davidoff photography Davidoff MD

Tear Drop02504pb03 water droplets window glass teardrop shape Davidoff photography water

Hydrostattic Forces

Droplets on Leaves65423 leaves leaf water droplets rain forces green shape sphere cohesion Davidoff MD Davidoff photography

Tulips in a VaseCreated by Abby Rischin PhD – Step into Art program – Newton Mass 80238pb04 Davidoff photography 

Gravitational Forces

Waterplants after the Rain73417p water plants reflection water drops gravity flower Purity Springs New Hampshire Davidoff photography Davidoff MD

Gravity

Fluid Fluid Level – Milk of Calcium Urine

16045 kidney renal nephrolithiasis fx calcifications calcified fluid fluid level dx milk of calcium urine CTscan Davidoff MD 16046b01 16046

Is the stone in the Bladder or Ureter? Use of Gravity

16046 urinary bladder fx calcification calcified lying posterior and midline dx recently passed stone CTscan Davidoff MD 16046 16046b01

Pressure Radius Tension

Pressure Tension Radius Laplace’s LawThis image shows a famous cardiologist, Dr Jonathan Fisher performing as Zippy the clown revealing and exaggerating the difficulty with surface tension and radius in the early stages of blowing up a balloon. Courtesy Ashley Davidoff MD. 60730b01 code lung physiology balloon surface tension surfactant alveolus alveoli radius principles

Chemical Forces

Electrical

System of Wires Nerves and Autonomic GangliaIn this scene of Johannesburg taken from the highway, we can view the vital lines of electrical energy that are essential to maintain the city. In the distance we see the city that the electrical lines serves.  We also see other elements that have biological equivalents.  – the fence that protects and prevents and forms a border between the highway and the property of the homes that reside on the other side.  An old goldmine dump to the left of the picture – the tall post office tower for communication and a host of office buildings for collaborative effort. 

57692 city electricity air energy essential community need Johannesburg South Africa fence capsule tcv the common vein Davidoff photography

83925 elctricity node ganglion nerve control telephone cable box connections communication control systems nerves Davidoff photography

 

Radiational Forces

XRT – Radiation Effects on the liver22975 Courtesy Ashley Davidoff MD code liver fx density straight border dx breast carcinoima dx radiation hepatitis imaging radiology CTscan DB

 

Action Reaction

Forces in Structure

Size

Pressure Tension Radius Laplace’s LawThis image shows a famous cardiologist, Dr Jonathan Fisher performing as Zippy the clown revealing and exaggerating the difficulty with surface tension and radius in the early stages of blowing up a balloon. Courtesy Ashley Davidoff MD. 60730b01 code lung physiology balloon surface tension surfactant alveolus alveoli radius principles

Shape

Position and Space

Vaccuum

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Character

Links and Connections

Tensile Strength84574p.800 flower forces tensile strength web water droplet triangle shape Davidoff photography Davidof MD

Trapped Forces

Forces in Function

CVS

Muscular Forces

CVS

Contractile Forces Presssure Gradients

Normal Pressures49483b01 heart cardiac LV left ventricle aorta aortic systemic circulation capillary capillaries arterioles venules right atrium RA right ventricle RV normal physiology pressures hemodynamics Davidoff MD Davidoff art

Normal (a,c) and Aortic Stenosis with Post Stenotic Dilatation (b,d)

07969c06 heart aorta left ventricle LV normal anatomy fx hypercontractile ballet slipper ejection fraction = 80% AV aortic valve thickened doming ejection click jet turbulence shear stress post stenotic dilalation dilitation LV angiogram angiography Courtesy Ashley Davidoff MD aortic valve 07969c03 07969c02 07969c04

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Wiggers Diagram – Pressures in th Cardiovascular System33808b.800 heart cardiac physiology pressure EKG ECG pressure curves diagram LV aorta LA left atrium left ventricle systole diastole acv waves Davidoff MD

GIT

GUT

Coordinated Muscular Forces80753pb01.800 Dancers Arielle Davidoff art Davidoff photography Courtesy Ashley Davidoff MD

Running64163b01 health youth age time physiology boy running happy davidoff photgraphy Davidoff MD

Chemical Forces

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Forces in Disease

Inflammation – Transudation –

Transudation and Exudation

71695c02 colon splenic flexure fx fat induration dirty fat Gerotas fascia lateral conal fascia thickened thickening of the interstitium acute inflammation inflammatory exudate diverticulitis large bowel CTscan Davidoff MD 71695c01

Infection

Loculated Air in Empyema – Air = infection in this Instance

71441c01 lung pleura air air bubbles forces gravity fibrin complex loculated thickened pleura pleural thickening fluid accumulation trapped air dx empyema CTscan Davidoff MD

Air Trapped by Fibrin – Implications 46308 skull maxillary sinus fx air fluid level fx air bubbles fx complex fluid dx acute sinusitis CTscan maxillofacial Davidoff MD

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Neoplasia and Other Growth Disorders

Atrophy and Ex Vacuo changes

71411c01.801 74 male with mental status changes brain cerebrum cerebral fx gliosis volume loss enlargement lateral ventricle on left encephalomalacia dx superior left frontal lobe parietal lobe in the territory of the left MCA left middle cerebral artery dilated left lateral ventricle due to tissue atrophy pull push force ex vacuo change asymmetry a= CTscan b = DWI – negative c= FLAIR d= FLAIR coronal e = T2 weighted image f = T2 weighted image MRI Davidoff MD 71411c01.800

Mechanical

Weakened Resistance

Pathological Fracture49471c03 bone hx male with history of metastatic lung carcinoma bone femur femoral neck fx fracture fx osteolytic bone lesion in neck dx pathological fracture artery atherosclerosis CTscan Davidoff MD 49471c032

Action Reaction

Disease and Healing

Boxers Fracture 15 year old –  Healing 4 Weeks Later

72175c01.800 15 year old with pain after punching bone hand 5th metacarpal fracture growth plates epiphyses epiphysis Boxer’s fracture four weeks later 4 weeks healing osteoid periosteal reaction osteoclastic activity periosteum plain X-ray plain film Davidoff MD

Healing49464 bone femur fx healed fracture compensation total knee replacement plain X-Ray Davidoff MD 49465

Circulatory Disease

Opposite Forces

Yin Yang Sign of Flow Reversal60438.800 s/p catheterization with painful pu;satile hematoma with new bruit artery femoral artery fx yin yang sign aka ying yang turbulent flow dx pseudoameurysm false aneurysm USscan color flow doppler red blue Davidoff MD

Compressive Forces

Mechanical Disease

Venturi EffectFlow in this tube is demonstrated by the arrows going from right to left through a narrowingin the tube (red) demonstrating a vacuum or suction effect caused by the sudden acceleration of the fluid as it goes through the narrowing or stenosis. This is seen in the U shaped monometer with the fluid level in blue being relatively higher at the site of the stenosis in relation to the pressure more upstream. The suction phenomenon is kown as the Venturi effect is seen in IHSS where the narrowing of the LVOT causes a vacuum effect on the anterior leaflet of the MV resulting in mitral regurgitation. The Venturi effect is also utilised in the functioning of carburettors in fuel driven engines. 34807b05 code heart cardiac SAM IHSS pressure drop vacuum suction acceleration stnosis Venturi effect tube principles

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