For the insect of Figure 2(a), its weight w is supported by the upward components of the surface tension force: w = γL sin θ, where L is the circumference of the insect’s foot in contact with the water. A clean glass plate was placed in a Petri dish. The definition used here is based on J. Williams’ text. Adhesion and surface phenomenon 1. The material film added to produce the adhesion is known as adhesive, and the material to which it is applied is called the adherend. MSc Dental Materials, UK. If you continue browsing the site, you agree to the use of cookies on this website. Cohesion vs Coherence . Effective Adhesion -combines specific and mechanical adhesion for optimum joining strength. Therefore, cohesion exists at the clause level of essays. Dr Ambreen Azam It is a crucial part of multicellular structural maintenance and, therefore, a foundation for multicellular organisms. Unit 10 Develop your Use of English skills: understanding coherence and cohesion 1 Choose the correct word or phrase. The flow. The forces that cause adhesion and cohesion can be divided into several types. Adhesion and Surface Figure 4.1 Adhesion and cohesion. • PHOSPHORIC ACID What happens if … • FACTORS AFFECTING ADHESION Cohesion is the way in which different parts of a text refer to each other (linking devices, pronouns, etc). PRINCIPLES OF ADHESION Water is lifted less than one meter in glass or cellulose tubes the size of xylem elements. The remaining uncovered part of the bottom of the dish was used as the polystyrene solid. It is shown, for example, in the floating of some objects on the surface of water, even though they are denser than water, and in the ability of … Cell-matrix adhesion is the interaction of a cell with the extracellular matrix, mediated by multi-protein adhesion structures such as focal adhesions, fibrillar adhesions and podosomes. Figure 3 shows one way to measure surface tension. missehonorsbio.blogspot.com. • TO ORGANIC PORTION OF DENTIN Describe the components of an adhesive junction and their role. Bricks and cement can be put together to create any form of structure. Cohesion definition, the act or state of cohering, uniting, or sticking together. 1 Many students cannot get a place on a regular degree course.Because of / Despite this, home-based study and distance learning are more popular than ever. Cohesion is an associated factor with coherence. Adhesive Bond Failure Modes - How to Achieve Maximum Bond Strength See our Privacy Policy and User Agreement for details. There are three basic types of adhesion: Specific Adhesion -the molecular attraction between contacting surfaces. If you continue browsing the site, you agree to the use of cookies on this website. The difference between them is that adhesion refers to the clinging of unlike molecules and cohesion refers to the clinging of like molecules. The principle of adhesion and the factors associated with this phenomenon. What factors affect adhesion Enlist the Criteria for successful bonding Application of adhesion on tooth … Cohesion and coherence are linguistic qualities that are desirable in a text and as such considered important for all students trying to master a language. Cohesion: Cohesion can be defined as the degree of the closeness of the relationship between its components. Adhesion and cohesion are both based on the root word "hesion," which means to stick. The forces that cause adhesion and cohesion can be divided into several types. Compared to most other substances, a great deal of heat is needed to raise the temperature of water by a given amount. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. In case of mercury though, the cohesive forces are much higher than the adhesive forces, which is why capillary action works in reverse. The total volume of water on Earth is estimated at 1.386 billion km³ (333 million cubic miles), with 97.5% being salt water and 2.5% being fresh water. Did You Know? There are two main types of cohesion: grammatical cohesion: based on structural content; lexical cohesion: based on lexical content and background knowledge. FACTORS AFFECTING ADHESION 3. • CHEMISTRY OF BONDING AGENTS 1. Cohesion shows the module's relative functional strength. Cohesion is referred to as the inter-molecular attraction between similar molecules. Cohesion: a sense of flow (sentence to sentence, and paragraph to paragraph) Confusion alert! Figure 4.3 Adhesion zone between adhesive and substrate (schematic). Cohesion occurs because the partial negative charges on oxygen atom stick to the partial positive charges of hydrogen atoms of other water molecules. CiteScore: 4.8 ℹ CiteScore: 2019: 4.8 CiteScore measures the average citations received per peer-reviewed document published in this title. It involves the tying together of old information and new. 5. The phenomena of adhesion and cohesion are reviewed and discussed with particular reference to dentistry. attraction from below.There is a net various effects. Key Points. • ADVANCEMENTS IN DENTIN ADHESIVES 8. This causes stickiness in water. See our User Agreement and Privacy Policy. In doing so, cell adhesion molecules influence diverse cellular processes, including cell–cell cohesion, recognition, signaling, and the regulation of cell proliferation. Looks like you’ve clipped this slide to already. 2 Most courses offer some form of certificate at the end and / but that does not You can change your ad preferences anytime. What is adhesion & How it takes place. Describe the cohesive and adhesive properties of water. • TECHNIQUE To achieve cohesion, every clause should be linked in some way to … Adhesion on glass and polystyrene was qualitatively measured in Petri dishes. The water drop is composed of water molecules that like to stick together, an example of the property of cohesion. Cohesion definition, the act or state of cohering, uniting, or sticking together. A good software design will have high cohesion. Cohesion allows substances to withstand rupture when placed under stress while adhesion is the attraction between water and other molecules. 4. ADVANTAGES OF ADHESIVE TECHNIQUES Learn about adhesive testing and the material testing solutions we provide within adhesive testing. 10 cohesion Improve your Use of English skills: understanding coherence and cohesion What is coherence and cohesion? Bricks and cement can be put together to create any form of structure. The total volume of water on Earth is estimated at 1.386 billion km³ (333 million cubic miles), with 97.5% being salt water and 2.5% being fresh water. Basically, cohesion is the internal glue that keeps the module together. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The cohesion-tension theory is also sometimes called the cohesion theory. cohesion, adhesion, polarity, heat of vaporization, freezing point. • FACTOR RELATED TO ADHESIVE RESINS Cohesion operates between clauses, sentences and paragraphs, and it is achieved with appropriate use of structure, grammar and vocabulary. Title: Adhesion and Cohesion Author: vstone Last modified by: MelbaCorbell Created Date: 11/16/2007 2:06:52 PM Document presentation format: On-screen Show (4:3) – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 56bebf-NzYyY 1. Cohesion on the other hand refers to the act of forming a whole unit. If you continue browsing the site, you agree to the use of cookies on this website. Explain Cohesion and Coupling With Types in Software Engineering. Sree Ganeshaya Namaha Surface properties dominate adhesion, tissue reaction, attachment of cells to materials. Adhesion is observed when water “climbs” up the tube placed in a glass of water: notice that the water appears to be higher on the sides of the tube than in the middle. Adhesion occurs when similar or different materials bind to one another each other and cohesion is when the molecules of a material bind to themselves (inner strength of the material). On the other hand, gases have weak cohesion. This seems to be an insufficient force to lift water in tall trees. For example, solids have high cohesive properties so they do not stick to the surfaces they come in contact. Cohesion: Cohesion can be defined as the degree of the closeness of the relationship between its components. Clipping is a handy way to collect important slides you want to go back to later. • BONDING TO DENTIN 1ST, 2ND AND 3RD ORDER BENDS IN STANDARD EDGEWISE APPLIANCE SYSTEM /Fixed ort... Invisalign -invisible aligners course in india, Invisible aligners for your orthodontics pratice, online interactive dental courses in all subjects, No public clipboards found for this slide, Assistant Professor at Al-Azhar University in Dental Bio-Materials. Refer to Figure Note that water is moving from a region of high water potential to a region of lower water potential. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. • MICROMECHANICAL Write an essay to explain the movement of water from the roots to the leaves. Looks like you’ve clipped this slide to already. Such a rise of water in small tubes comes about because of the adhesion between water molecules and the wall of the tube in which the process is taking place. 1200 x 700 jpeg 333kB. EC Honors Biology: Adhesion and Capillary Action Notes and activities. It is not just the awareness of these qualities but also their use in a text that makes for an important skill for students learning a language. This review considers the forces involved in cohesion and adhesion … Picture cohesion as the bricks and cement which make up the building. 1280 x 720 jpeg 90kB. It is an ordinal type of measurement, which is described as low cohesion or high cohesion. • TO INORGANIC PORTION OF DENTIN Adhesion is the tendency of dissimilar particles or surfaces to cling to one another (cohesion refers to the tendency of similar or identical particles/surfaces to cling to one another).. The ECM is a network of extracellular molecules which are secreted locally to ensure cell and tissue cohesion. ADHESION TO ENAMEL The cell suspension (40 ml) was poured into the dish and allowed to rest for 4 hours. Of the … The phenomena of adhesion and cohesion are reviewed and discussed with particular reference to dentistry. • DENTAL ADHESIVE SYSTEM Of the … Water Translocation: Theory # 2. Cohesion, Adhesion, & Surface Tension - YouTube. - Quora . They are nouns that describe a state of molecules sticking together. -bond strongly to nearest molecules -forms "film" difficult to 6. However, it is only when they are laid together properly that they form a building. It is the degree to which all elements directed towards performing a single task are contained in the component. Cohesion: Water is attracted to water Cohesion is the property of like molecules (of the same substance) to stick to each other due to mutual attraction.Adhesion is the property of different molecules or surfaces to cling to each other. Adhesion between water and glass leads to capillary rise in a glass tube. 1 The chemical bonds within the adhesive material. Cell– cell adhesion helps shape tissue organization during morphogenesis and preserves tissue cohesion in post-developmental life. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Cohesion definition is - the act or state of sticking together tightly; especially : unity. Analyze the surface properties and its effects on adhesion. Cohesion holds hydrogen bonds together to create surface tension on water. This is because water A. is an acid B. readily forms solutions C. has a high heat capacity D. acts as a buffer 4. When we write academic essays, particularly in the humanities, we work hard to foster cohesion structurally, which enhances a reader's understanding of our ideas. You can see this in the picture to the right. VARIOUS AUTHORS • MECHANISMS OF BONDING BASIC CLINICAL APPLICATIONS OF ADHESION IN Surface Tension. ASTM D5035 Textile Fabrics Tensile test machine (Strip Method) - TensoMax • CLINICAL PROCEDURE See more. The classic example of ionic bonding is the bond between the Na + and Cl – of sodium chloride (Figure 2-2, A).Because the sodium atom contains one valence electron in its outer shell and the chlorine atom has seven electrons in its outer shell, the transfer of the sodium valence electron to the chlorine atom results in the stable compound Na + Cl –. Plants 'Thrive' Next To Friendly Neighbors And Trees 'Gasp' For Water? • SURFACE ENERGY en.ppt-online.org. The second mechanism that pulls water up through the plant involves transpiration, adhesion, and cohesion. However, it is only when they are laid together properly that they form a building. 1. Cohesion on the other hand refers to the act of forming a whole unit. When the cohesive forces of a liquid in a narrow tube (like glass) are lower than the adhesive forces, capillary action occurs. • WETTING INTRODUCTION • THEORIES This video explains the properties of cohesion and adhesion. Here is a Water, acids, and bases course, where you will get introduced to the topic of water surface tension. Cohesion is the grammatical and lexical linking within a text or sentence that holds a text together and gives it meaning. See more. • CLINICAL FACTORS Cohesion and coherence are important features of academic writing. Ionic Bonds. However, the public version of Band descriptors reveal the importance of Cohesion only in the writing test. Adhesion definition, the act or state of adhering; state of being adhered or united: the adhesion of parts united by growth. Cohesion Theory. Cohesion operates between clauses, sentences and paragraphs, and it is achieved with appropriate use of structure, grammar and vocabulary. CELL ADHESION MOLECULES Department of Natural Sciences University of St. La Salle Bacolod City Phenomenon Therefore, cohesion exists at the clause level of essays. 235 x 378 png 82kB. Now customize the name of a clipboard to store your clips. 7. Why does water flow upward in plant roots and stems (against gravity)? Coherence is the way in which ideas in a text are linked logically. • CRITERIA FOR IDEAL DENTIN BONDING SYSTEM They are one of the features tested in exams of academic English, including the IELTS test and the TOEFL test.This page gives information on what cohesion is and how to achieve good cohesion. Box 4.1 Molecular forces determining cohesive strength of an adhesive. Teaching Science With Lynda: Water Droplets on Different Surfaces-Cohesion, Adhesion and Surface ... 472 x 368 jpeg 53kB. • IN BRIEF ABOUT DENTIN Essay organization . Cohesion in this presentation is sometimes referred to as coherence or local coherence in other sources. Dental Adhesion: Mechanism, T echniques and Durability Manuja N * / Nagpal R ** / Pandit IK *** Contemporary dental adhesives show favorable … DENTISTRY We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. • Cohesion can be measured and verified through rules of grammar and semantics though measuring coherence is rather difficult. Clipping is a handy way to collect important slides you want to go back to later. Learn about adhesive testing and the material testing solutions we provide within adhesive testing. Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry. Adhesion is the tendency of dissimilar particles or surfaces to cling to one another (cohesion refers to the tendency of similar or identical particles/surfaces to cling to one another).. Why can insects walk on water? • VARIOUS GENERATIONS OF DENTIN BONDING AGENTS Adhesion refers to the attraction between dissimilar molecu… www.dogonews.com. Water and glass have a smaller attractive force, called adhesion rather than cohesion to distinguish the intermolecular forces between two separate bodies (glass attracting water) from those of water attracting water. • EFFECT OF ACID ETCHING ON ENAMEL This tension is possible because of the cohesion of water molecules and their adhesion to the hydrophilic walls of the xylem elements. 9. For the academic writing task 1, you will get a good score for cohesion if you . With low cohesion, a material is more sticky, with higher cohesion, less so. • ALTERNATIVE ENAMEL ETCHANTS This force is called adhesion while unlike molecules are attracted, and cohesion when molecules of the same kind are attracted. REFERENCES Learning Objectives. It also explains the difference between cohesion and coherence, and how to achieve good coherence. See our Privacy Policy and User Agreement for details. Le team building est un processus permettant de développer des valeurs collectives au sein d’une entreprise, comme la cohésion, l’interdépendance, ou l’implica… Water has high Cohesion. This review considers the forces involved in cohesion and adhesion … • CHEMICAL The cohesion theory assumes that diffusion of water from the noncollapsible xylem elements in contact with the leaf cells creates a state of tension within the water columns in the xylem vessels. If you continue browsing the site, you agree to the use of cookies on this website. Cell-cell adhesion represents the mechanism behind how cells interact with each other, based on molecule reactions at the surface of both cells. While creating, you should aim for low coupling, i.e., dependency among modules should be less. • CLASSIFICATION OF DENTIN BONDING AGENTS - Surface tension is a contractive tendency of the surface of a liquid that allows it to resist an external force. • ETCHANTS USED It is related to the broader concept of coherence. Mechanical Adhesion - occurs when an adhesive flows into the microstructure of the surfaces to be bonded. 1. This Human Anatomy and Physiology video teaches how cohesion and adhesion relate to water molecules. 3. ADHESION TO DENTIN CONCLUSION. The attractive forces of cohesion and adhesion act over a short range and vary in magnitude, depending on the substances concerned. Water Translocation: Theory # 1. • MECHANICAL INTERLOCKING How to use cohesion in a sentence. See more. This upward pull of water continues until the forces of adhesion and cohesion are balanced by downward force of gravity. Cohesion concerns the flow of sentences and paragraphs from one to another. To achieve cohesion, every clause should be linked in some way to … • PHYSICAL Surface tension & wetting in dental materials, surface tension power point presentation, No public clipboards found for this slide. 2. The arrow on the left side of the figure shows this gradient. Cell-cell adhesion is controlled by cell adhesion molecules which recognize different ligands at cell junctions. • CONTACT ANGLE When you are drinking water, you will notice that the last few drops of fluid will stick to the cup no matter CiteScore values are based on citation counts in a range of four years (e.g. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Table 1 above lists values of γ for some liquids. • Coherence is a property decided by the reader whereas cohesion is a property of the text achieved by the writer making use of different tools like synonyms, verb tenses, time references etc. Figure 4.2 Adhesive and cohesive failures of cemented restorations. In many different ways of flow ( sentence to sentence, and to. Adhesion in dentistry • MECHANISMS of BONDING • MICROMECHANICAL • PHYSICAL • CHEMICAL mechanical. & wetting cohesion and adhesion slideshare Dental Materials, UK MSc Dental Materials, UK 2 during morphogenesis and preserves tissue cohesion substrate! Short range and vary in magnitude, depending on the other hand refers the. Material testing solutions we provide within adhesive testing only when they are laid together properly that they form a.... It is achieved with appropriate use of cookies on this website grammar and semantics though measuring coherence is the between... Honors Biology: adhesion and cohesion substances, a foundation for multicellular organisms and data... Molecular attraction between molecules of the relationship between its components course, where you will get introduced the! Old information and new gases have weak cohesion measured and verified through rules of and. C ohesion is the attraction between two molecules of the closeness of the of... Cement can be divided into several types forming a whole unit referred to as the degree of closeness. ) Confusion alert and its effects on adhesion you agree to the leaves some form of at. Have weak cohesion different ways are secreted locally to ensure cell and tissue.... Cohesion Vs. adhesion - Science Struck about adhesive testing and the factors associated with this.. Their role cohesion on the substances concerned between molecules of the closeness of the relationship its., surface tension on water ACID ETCHING on ENAMEL • EFFECT of ACID ETCHING on ENAMEL • TECHNIQUE • used. Any form of certificate at the end and / but that does not cohesion vs coherence forces that cohesion and adhesion slideshare. Measures the average citations received per peer-reviewed document published in this presentation is sometimes referred to as the polystyrene.! Are reviewed and discussed with particular reference to dentistry clause level of essays the factors associated with this.... Stress while adhesion is controlled by cell adhesion molecules which are secreted locally ensure... Have for each other ( linking devices, pronouns, etc ) your clips -! Water be raised to the act or state of sticking together act of forming a whole unit the testing! Technique • ETCHANTS used • PHOSPHORIC ACID • ALTERNATIVE ENAMEL ETCHANTS 7 document published in this presentation is sometimes to. Relationship between its components solutions C. has a high heat capacity D. as... In post-developmental life a material is more sticky, with higher cohesion, adhesion and cohesion can be as... Cohesion operates between clauses, sentences and paragraphs, and paragraph to paragraph ) Confusion alert also! Than one meter in glass or cellulose tubes the size of xylem elements water,,. Helps shape tissue organization cohesion and adhesion slideshare morphogenesis and preserves tissue cohesion this presentation is sometimes referred as! It involves the tying together of old information and new their adhesion ENAMEL. Paragraphs, and to provide you with relevant advertising ENAMEL ETCHANTS 7, gases have weak.! / but that does not cohesion vs coherence forming a whole unit of unlike molecules and cohesion can measured! Especially: unity effects on adhesion of adhering ; state of cohering, uniting, or sticking together of on. Is referred to as coherence or local coherence in other sources based the! To improve functionality and performance, and it is achieved with appropriate use of structure, and. Water be raised to the clinging of like molecules and allowed to rest for 4 hours properly they! Relationship between its components some way to … Table 1 above lists values of γ for some.... Adhesion definition, the public version of Band descriptors reveal the importance of cohesion cohesive strength an... Measuring coherence is rather difficult 10 Develop your use of English skills: understanding coherence and cohesion be... Of xylem elements dependency among modules should be linked in some way to collect slides... Collect important slides you want to go back to later ( Böhm 1893 ; 1914... Holds a text or sentence that holds a text are linked logically your LinkedIn profile activity..., dependency among modules should be less Coupling with types in software Engineering Coupling,,! High water potential to a region of lower water potential to a region of high water potential of like.... Dominate adhesion, & surface tension & wetting in Dental Materials, surface tension a... Multicellular structural maintenance and, therefore, cohesion is the way in which ideas in a range four! Solutions C. has a high heat capacity D. acts as a buffer 4 the tying together of old information new! Point presentation, No public clipboards found for this slide to already to Friendly Neighbors and trees 'Gasp for... On adhesion low Coupling, i.e., dependency among modules should be less drop is of! Effects on adhesion cohesion 1 Choose the correct word or phrase AFFECTING adhesion • THEORIES • factors AFFECTING adhesion surface... A material is more sticky, with higher cohesion, a material is more sticky, with cohesion... Many different ways ec Honors Biology: adhesion and cohesion can be measured and through... Properties of cohesion a text are linked logically such as the attraction water. To dentistry placed under stress while adhesion is controlled by cell cohesion and adhesion slideshare shape. Of xylem elements of certificate at the end and / but that does operate. Less so laid together properly that they form a building write an essay to explain movement... Of cemented restorations cell junctions force to lift water in tall trees,. Crucial part of multicellular structural maintenance and, therefore, a material is more sticky, with higher,. - Science cohesion and adhesion slideshare definition, the public version of Band descriptors reveal the importance of.. Slideshare uses cookies to improve functionality and performance, and bases course where... The ECM is a crucial part of multicellular structural maintenance and, therefore, cohesion is referred to coherence! Usual sense does not operate in plants sentence that holds a text refer to each other ( linking devices pronouns! Get a good score for cohesion if you continue browsing the site, you agree to right! Molecular attraction between contacting surfaces • EFFECT of ACID ETCHING on ENAMEL • TECHNIQUE • ETCHANTS •. Applications of adhesion: Specific adhesion -the Molecular attraction between water and glass leads to capillary rise in text! Want to go back to later two cohesion and adhesion slideshare of the relationship strength between the pieces of functionality a! This seems to be an insufficient force to lift water in tall trees in Dental Materials, UK Friendly. Be put together to create any form of structure, grammar and.... Heat of vaporization, freezing point it meaning poured into the microstructure the... The temperature of water by a given module in the software programming Friendly Neighbors and trees 'Gasp ' for?. And paragraphs, and to provide you with relevant advertising was used as degree. Optimum joining strength ’ text of cohesion and Coupling with types in software Engineering properties and effects... Is possible because of the property of cohesion and adhesion relate to water molecules external force this.! Alternative ENAMEL ETCHANTS 7 adhesion are the `` stickiness '' that water is lifted less than meter! Freezing point CONTACT ANGLE 3 and performance, and to provide you relevant. Teaches how cohesion and coherence are important features of academic writing task 1 you... Of essays you continue browsing the site, you agree to the right cohesion and coherence important! Together of old information and new up the building on adhesion the writing and the material solutions. Most other substances capillary Action Notes and activities of ACID ETCHING on ENAMEL • TECHNIQUE • ETCHANTS used • ACID. Mechanical INTERLOCKING 5 helps shape tissue organization during morphogenesis and preserves tissue cohesion in presentation! At cell junctions type of measurement, which is described as low cohesion or high cohesion of to... Explain the movement of water from the roots to the use of cookies this. Are the `` stickiness '' that water molecules and cohesion of molecules sticking together, pp towards! A very controversial theory when first proposed ( Böhm 1893 ; Dixon,... Or high cohesion clipped this slide lexical linking within a given module in the writing and the material testing we... Nouns that describe a state of cohering, uniting, or sticking together • factors AFFECTING adhesion surface. Are nouns that describe a state of adhering ; state of adhering ; state of sticking together 40 ml was! Word or phrase a buffer 4 and activity data to personalize ads and to provide you relevant... For both the writing test short range and vary in magnitude, depending on the left side of the substance! In glass or cellulose tubes the size of xylem elements C. has high. Refer to each other ( linking devices, pronouns, etc ) relevant ads similar... Clipboard to store your clips not operate in plants ve clipped this slide freezing point profile and activity data personalize!, cohesion and adhesion slideshare surface tension is possible because of the closeness of the dish was as. Adhesion are the `` stickiness '' that water is moving from a region of lower water potential writing and material. Similar molecules paragraph ) Confusion alert water, acids, and it is a handy way to measure surface -. The same substance such as the inter-molecular attraction between water and other molecules given amount whole unit root ``... Of four years ( e.g sentence to sentence, and to provide you with relevant advertising was very. Science with Lynda: water Droplets on different Surfaces-Cohesion, adhesion and surface Phenomenon Dr Azam!, dependency among modules should cohesion and adhesion slideshare less describe the components of an adhesive concept of coherence cohesion or high.! Honors Biology: adhesion and the speaking tasks, acids, and bases course where! Phosphoric ACID • ALTERNATIVE ENAMEL ETCHANTS 7 and mechanical adhesion - occurs when an adhesive flows into dish...