Projects Tagged with "φυσική"
15 pendulum_test
By: dapontes
Views: 1814 | LoveIts: 157
Description: I saw the video http://www.youtube.com/watch?v=yVkdfJ9PkRQ and decided to make a simulation.
From (x,t) to (v,t) to motion
By: dapontes
Views: 1131 | LoveIts: 17
Description: Drag the 5 "points" to change the graph (position x, time t). Press the button "Start" to simulate the motion according to the graph. Press the Green flag to start.
Physics_Gears
By: dapontes
Views: 1070 | LoveIts: 21
Description: A remix of nevit's project about gears. Change the speed (v1) of the first gear (left). Choose the gear (buttons 1, 2 and 3). Learn more about gears: http://en.wikipedia.org/wiki/Gear
Mars- Retrograde motion
By: dapontes
Views: 616 | LoveIts: 28
Description: Watch Mars' apparent motion across the Earth's sky as the Earth passes in their orbits around the Sun. The retrograde otbits are caused by the overtaking Mars as they orbit the Sun. Thanks forest for the music "Act of Love". Learn more about the retrograde motion in http://en.wikip ... show more
Three virtual images
By: dapontes
Views: 490 | LoveIts: 12
Description: A minifig in front of two mirrors (vertical and horizontal). If you like change the position of minifig in front of the mirrors. Thanks DarthPickley for the minfig sprites and TheSaint for the music.
Electric potential due to charged particles
By: dapontes
Views: 461 | LoveIts: 18
Description: You can change the positions of two particles (charge q1 and charge q2) and their values. Green flag to start. Thanks DarthPickley for the nice idea.
Projectile Motion (Demo)
By: dapontes
Views: 405 | LoveIts: 7
Description: Projectile motion and Safety Parabola!
Physics+Scratch=Fun! (Demo)
By: dapontes
Views: 394 | LoveIts: 29
Description: A MICROWORLD WITHOUT FRICTION! I used only the law of conservation of energy for the small cart: Kinetic Energy+potential Energy=constant INSTRUCTIONS 1.Press spacebar to change background 2.Press the 0 key to start the motion from this position (with velocity v=0)
Newton's Thought Experiment
By: dapontes
Views: 386 | LoveIts: 11
Description: INSTRUCTIONS a) Green flag to start b) Click on square A (or B) to put there the spacecraft (initial position) c) Choose the values of initial velocity (by sliders v0x and voy) d) Press the button to start the motion e) If you like click on stage to put the spacecraft on that position. Pre ... show more
wheel road couple
By: dapontes
Views: 318 | LoveIts: 13
Description: 503 Service Unavailable Sorry, our server is having some difficulties. Please try again. --The Scratch Team
Six mirrors_game
By: dapontes
Views: 298 | LoveIts: 16
Description: I saw the chalkmarrow's project and i decided to make another one easy game. We have one laser source, six mirrors and one target. 1.Click and drag the white dot to change the mirror's position. 2.Click and drag the red dot to change the mirror's diraction 3.Choose the position of the las ... show more
Water waves
By: dapontes
Views: 291 | LoveIts: 14
Description: Water waves are an example of waves that involve a combination of both longitudinal and transverse motions. As a wave travels through the waver, the particles travel in clockwise circles. The radius of the circles decreases as the depth into the water increases. http://paws.kettering.edu/~drussell/D ... show more
simple_pendulum_experiment
By: dapontes
Views: 284 | LoveIts: 11
Description: Simple pendulum experiment. INSTRUCTIONS 1.Green flag to start 2.Chooge initial angle θο 3.Choose the value of length L 4.Click on the play button 5.When the mass bob completes a full swing click on clock 6.Repeat steps 3 up to 5 in order to take mesurements for differnt lengt ... show more
Rutherford_experiment_02
By: dapontes
Views: 282 | LoveIts: 10
Description: Remix of my project....This time I use nine sprites instead of one. A simple model of the Rutherford scattering experiment. Ernest Rutherford was the first to use the idea that matter could be investigated by firing particles at it.
The physics of Camera Obscura
By: dapontes
Views: 277 | LoveIts: 8
Description: I used simple geometry to calculate the magnitude of the real image inside the camera obscura. For an introduction look at the goch's project "CameraObscura". Thanks to goch for the idea. Thanks to greenflash, who made the music "The Entertainer" by Scott Joplin.
Inclined plane_Galilei
By: dapontes
Views: 271 | LoveIts: 7
Description: A virtual Lab to compare speed and time at A and B.
interference_test
By: dapontes
Views: 264 | LoveIts: 11
Description: A simple visual project. Music by Kassetas
From Graph (x,t) to Simulation
By: dapontes
Views: 262 | LoveIts: 6
Description: Drag the 8 "points" to change the graph (position x, time t). Press the button "Start" to simulate the motion according to the graph. Press the Green flag to start. Thanks forest for the music.
Minifig Reflection
By: dapontes
Views: 258 | LoveIts: 5
Description: A minifig in front of a rotated mirror. Press the button GO to start the rotation and the button PAUSE to stop. Thanks DarthPickley for the minfig sprites and the TheSaint for the music. It works better in presentation mode.
Mechanical Egg Curve Construction
By: dapontes
Views: 257 | LoveIts: 7
Description: I use a mechanism (Slider-Crank) to draw an egg! Click on the button info to read about the idea for this drawing. Thanks gosh for the music (Fooled Love).
1sprite_1script_projectile
By: dapontes
Views: 252 | LoveIts: 2
Description: What's your "reaction time"?. Click on the green flag to start. Use the mouse-pointer as ... paddle! Based on project "one sprite - one script" ( Bluestribute).
Independent_motions
By: dapontes
Views: 251 | LoveIts: 8
Description: Thanks abee for the monkey's image and the idea. INSTRUCTIONS 1.Click green flag 2.Place girl and monkey 3.Choose the initial velocity v0 and the gravity g 4.Click on start button * Click on monkey to stamp it. The problem is a version of "The Monkey and the Hunter" ( ... show more
Simple Harmonic Motion on a frictionless surface
By: dapontes
Views: 239 | LoveIts: 12
Description: A block of mass (m) attached to a spring of spring constant (k) is free to move on a frictionless horizontal surface. INSTRUCTIONS 1.Choose the spring constant (k) and the mass of block (m). 2.Choose the initial position of the block (click and drag) 3.Click on the block to start the motion ... show more
wave_transverse
By: dapontes
Views: 238 | LoveIts: 9
Description: Simulation of the transverse wave. ... Click on green flag to start. This project works well on presentation mode.
convex mirrors
By: dapontes
Views: 237 | LoveIts: 11
Description: Ray diagrams for convex mirrors. Use arrows keys to change the position of the object. Click on object to change the magnitude. More information at wikipedia http://en.wikipedia.org/wiki/Curved_mirror
Slider_Crank Mechanism
By: dapontes
Views: 235 | LoveIts: 8
Description: I saw the chalkmarrow's project and i decided to make another one mechanism but in different way. Use the sliders R and a to change the length of the crank and the angular velocity respectively. If you like change the position of the mechanism use the arrows keys (up, down, right, left). Gre ... show more
Center of mass_Game
By: dapontes
Views: 230 | LoveIts: 7
Description: The task: Which is the overhang (maximum horizontal distance between the higher brick and the lower brick ) than one can reach in theory without the pile crumbling? Click and drag to change the horizontal position of a brick. Look at http://web.ics.purdue.edu/~mjcarlso/ST/videos.html
Four Cylinder Engine
By: dapontes
Views: 229 | LoveIts: 12
Description: A remix of ngmr's project. Look at my project http://scratch.mit.edu/projects/dapontes/2198212
Faraday
By: dapontes
Views: 228 | LoveIts: 5
Description: Faraday's Magnetic Field Induction Experiment, based on the project "mouse physics" of m44. Move the magnet back and forth.
4-stroke petrol engine (Otto)
By: dapontes
Views: 227 | LoveIts: 16
Description: A simulation of the 4-stroke petrol engine. For an animation look at the project http://scratch.mit.edu/projects/dapontesgr/2198148
Fermat1
By: dapontes
Views: 224 | LoveIts: 4
Description: PROBLEM: The principe of least time (Last revised 24/04/08)
planetary_model_Ptolemy
By: dapontes
Views: 212 | LoveIts: 6
Description: The planet revolves around the center of the epicycle which in turn revolves around the center of the larger circle. The witch draws the epicycle of radius (R) and the planet a circle of radius (r1). Click on the green flag to start. Stop and change the values of radius R and r1 with the slider ... show more
Ptolemaic Geocentric Model
By: dapontes
Views: 212 | LoveIts: 11
Description: A remix of my project about the Geocentric planetary system of Ptolemy (a simplification, thanks Paddle2See). Learn more about this in wikipedia http://en.wikipedia.org/wiki/Deferent_and_epicycle Click on the green flag to start.
Hooke's Law experiment
By: dapontes
Views: 211 | LoveIts: 1
Description: This law (F=-kx) was discovered in 1676 by the British scientist Robert Hooke. Change the spring constant and mass by sliders.
concave mirrors
By: dapontes
Views: 211 | LoveIts: 9
Description: Ray diagrams for mirrors. Click and drag the object to see the image (real and virtual). Look at wikipedia: http://en.wikipedia.org/wiki/Curved_mirror
Charging a Single Sphere by Induction Using a Negatively-Charged Object
By: dapontes
Views: 210 | LoveIts: 7
Description: Green flag to start... Look at two others projects "charging by contact" http://scratch.mit.edu/projects/dapontesgr/1741892 and http://scratch.mit.edu/projects/dapontesgr/1741886
mirror_girl
By: dapontes
Views: 205 | LoveIts: 7
Description: An interesting application of reflection. Press the green flag to start.
Illusion_Rotation
By: dapontes
Views: 204 | LoveIts: 2
Description: The magnet can appear to rotate more slowly than the true rotation, it can appear stationary, or it can appear to rotate in the opposite direction from the true rotation. Use the slider "turn" to change the speed of rotation.
rectilinear+cyclic
By: dapontes
Views: 204 | LoveIts: 8
Description: The trajectories of three lights on a rolling wheel. Green flag to start.
Brachistochrone_Experiment
By: dapontes
Views: 203 | LoveIts: 10
Description: A Brachistochrone curve (Gr. βραχίστος, brachistos - the shortest, χρόνος, chronos - time), or curve of fastest descent, is the curve between two points that is covered in the least time by a body that starts at the first point with zero speed and is constrained to move along the curv ... show more
Electric Potential (new)
By: dapontes
Views: 202 | LoveIts: 10
Description: A second approach of my project "Electric Potential due to charged particles". You can change the positions and the values of the charges q1 and q2. Thanks snikos_scratch and ssaamm for the idea. Green flag to start.
moire_animation
By: dapontes
Views: 198 | LoveIts: 10
Description: Green flag to start "The moiré running horses is a pattern designed to simulate the movement of horses. As the lines of the parallel grid move across the horses pattern, an alternating series of images appears to resemble the movement". http://micro.magnet.fsu.edu/primer/java/scienc ... show more
Conservation of Energy
By: dapontes
Views: 192 | LoveIts: 4
Description: A block of mass (m) attached to a spring of spring constant (k) is free to move on a frictionless horizontal surface. INSTRUCTIONS 1.Choose the spring constant (k) and the mass of block (m). 2.Choose the initial position of the block (click and drag) 3.Click on the block to start the motion ( ... show more
Mirror_Animation_I
By: dapontes
Views: 191 | LoveIts: 4
Description: A remix of 1Zapdos1’s project. You can see the dancer rotating clockwise or counter – clockwise (…or both ways!). I wanted to examine what happens if the dancer rotates in front of the mirror. Comment saying what you see.
motion_free_curve
By: dapontes
Views: 189 | LoveIts: 11
Description: ONE MICROWORLD WITHOUT FRICTION! I used only the law of conservation of energy for the small cart: Kinetic Energy+potential Energy=constant If you like put the cart anywhere on the screen and press the button Start. Click on the pen to draw your green line. The cart will follow the g ... show more
mouse_physics_dap
By: dapontes
Views: 175 | LoveIts: 4
Description: My work is based on m44's project "mouse physics". Choose the graph (1,2,3) and then press the green flag to start: CLICK and DRAG on the cat to draw a graph similar to the one below.
Refractions
By: dapontes
Views: 175 | LoveIts: 8
Description: A project based on the Law of Refraction (Snell's Law). Green flag to start. Thanks forest for the background and TheSaint for the music.
Elastic Potential Energy
By: dapontes
Views: 174 | LoveIts: 4
Description: A simple demo to verify that the mechanical energy of the system (block+spring) remains constant. Thanks mathjp for the music of Nino Rota (project Scratch2_Attractor). Thanks Paddle2See for the help...
Random_decay_dice
By: dapontes
Views: 168 | LoveIts: 9
Description: I used only 20 dice to model the radioactive decay. Press the cat to throw the dice.
The minimum distance
By: dapontes
Views: 160 | LoveIts: 7
Description: Change the speed of the cat (or duck) and see the change of the minimum distance (duck-cat) in the graph (d.t).
From Graph (v,t) to Simulation
By: dapontes
Views: 159 | LoveIts: 5
Description: Drag the 4 "points" to change the graph (velocity v, time t). Press the button "Start" to simulate the motion of the girl according to the graph(v,t). Press the Green flag to start. Thanks forest for the music.
refraction1
By: dapontes
Views: 156 | LoveIts: 4
Description: SNELL'S LAW of REFRACTION-Simulation. Click and drag on source to change the position. Green flag to start.
Karaghiozis_String_remix
By: dapontes
Views: 156 | LoveIts: 8
Description: A second remix of Cyclone's project "string". Thanks nevit for the sprites. Music composed by Yiannis Kassetas (from the album FUNKABYSS, Information about Greek Shadow Theatre (in Greek and in English): http://www.greekshadows.com/gr/main.html Dedicated to Cyclone
15 pendulum_test (remix)
By: dapontesgr
Views: 156 | LoveIts: 7
Description: Ο καλός συνάδελφος Γιώργος Παναγιωτακόπουλος, σε σχόλιο του στο "Κοινωνικό Δίκτυο Διδάσκοντας Φυσικές Επιστήμες", μου ζήτησε να χρησιμοποιηθεί μια μεταβλητή ... show more
Projectile Motion I
By: dapontes
Views: 155 | LoveIts: 6
Description: Projectile - horizontal motion. Green flag to start. Choose the initial velocity and the gravity. Click on the "marks" to find the velocity. The time interval between successive images is 0.3 units.
wave_Longitudinal
By: dapontes
Views: 154 | LoveIts: 5
Description: A mechanical wave exists in a medium (which on deformation is capable of producing elastic restoring forces). You can choise the values for A=amplitude of the wave, f=frequency...and the medium (1,2,3). Green flag to start, space bar to initialize. This project works well on presentation mode.
Torricelli_new
By: dapontes
Views: 150 | LoveIts: 6
Description: The experiment and the theory. Click and drag the points 1 and 2 to change their positions. Compare the real trajectories (photo) and the simulation.
standing_wave
By: dapontes
Views: 150 | LoveIts: 4
Description: A virtual Lab to experiment with standings waves. Try wavelength λ=920, 460, 306, 230...
Square_Circle_Billiard
By: dapontes
Views: 143 | LoveIts: 9
Description: Thanks forest for the music
Rutherford_experiment01
By: dapontes
Views: 142 | LoveIts: 6
Description: A simple model of the Rutherford scattering experiment. Ernest Rutherford was the first to use the idea that matter could be investigated by firing particles at it.
electric_dipole
By: dapontes
Views: 141 | LoveIts: 6
Description: Thanks nevit for the idea and forest for the backgrounds and music. Happy birthday Ariadne!
reflection_dance (Remix)
By: dapontes
Views: 140 | LoveIts: 11
Description: Reflections again! Thanks mathjp for the music (Project System1)
magnet2_turn
By: dapontes
Views: 137 | LoveIts: 4
Description: Click on the green flag to start. Click on the needle to change its position.
Trampoline_interactive
By: dapontes
Views: 133 | LoveIts: 2
Description: Green flag to start. Use the Arrows Keys (or the buttons) to control the cat's speed. Try to make a vertical (or an horizontal) motion of the cat! Thanks bharvey for the idea.
Rotation_1
By: dapontes
Views: 131 | LoveIts: 6
Description: A virtual Lab: Rotation. Change the body (tige1, tige2 and boy). (g=gravity).
Decomposition of a Vector
By: dapontes
Views: 126 | LoveIts: 6
Description: Click and drag the arrow F to change the vector. Click and drag the A and B to change the angle of the axis OA and OB.
Karaghiozis_String
By: dapontes
Views: 125 | LoveIts: 4
Description: A remix of Cyclone's project "string". Thanks nevit for the sprites. Music composed by Yiannis Kassetas (from the album FUNKABYSS. Dedicated to Cyclone
Center of mass or Barycenter
By: dapontes
Views: 123 | LoveIts: 5
Description: We have four objects (with masses m1, m2, m3, m4). The program calculates the position of center of mass G. Click and drag to change the positions of m1, m2, m3, and m4. Choose the values of mass..
refraction_dance
By: dapontes
Views: 121 | LoveIts: 8
Description: A project based on the Law of Refraction. Green flag and then press the button "Run". If you like change the position of the source (sun)....
Atomic Structure
By: dapontesgr
Views: 119 | LoveIts: 5
Description: Τοποθέτησε το δείκτη του ποντικιού πάνω από τα στοιχεία του περιοδικού συστήματος για να πάρεις την "ατομική δομή" τους.
Temperature Conversion - Celsius to Fahrenheit
By: dapontes
Views: 114 | LoveIts: 10
Description: A project about the temperature conversion: From Celsius to Fahrenheit. Use the slider to change the value of temperature (C). Look at wikipedia http://en.wikipedia.org/wiki/Fahrenheit Thanks Kinderlabor for his suggestion.
mirror_rotation
By: dapontes
Views: 112 | LoveIts: 5
Description: An application: the reflection of light. Change the position of the source. Sorry, it works well only if the source is near the vertical (Thanks ffred)
reflection_dance2
By: dapontes
Views: 111 | LoveIts: 7
Description: A remix of my project "reflection dance". I added effects and the Ferreri's song. It works better in presentation mode.
Physics_Gears (Remix)
By: dapontesgr
Views: 111 | LoveIts: 3
Description: Το απλούστερο σύστημα μελέτης των οδοντωτών τροχών περιλαμβάνει δύο γρανάζια που το ένα συναρμόζει με ένα άλλο και περιστρέφονται με αντίθετες φορές. Το πρώτο γρα ... show more
strange planete
By: dapontes
Views: 110 | LoveIts: 5
Description: A (remix) project based on ScratchDesignStudios'work Press green flag to start.
Atomic Spectra
By: dapontesgr
Views: 109 | LoveIts: 5
Description: Τοποθέτησε το δείκτη του ποντικιού πάνω από τα στοιχεία του περιοδικού συστήματος για να πάρεις το "ατομικό φάσμα" του.
Young's_Interference
By: dapontes
Views: 107 | LoveIts: 5
Description: An interference pattern involving water waves is produced by two vibrating sources (S1 and S2) at the water's surface. Change the positions of S1 and S2 (click and drag). With the red particle-test i mesure the "path difference". Space bar to clear.. Thanks to DarthPickley f ... show more
Yo-Yo game
By: dapontes
Views: 107 | LoveIts: 6
Description: After demo click and drag the sprite-man to play yo-yo. Press green flag to startd
Waves on a string
By: dapontes
Views: 105 | LoveIts: 6
Description: A remix of DarthPickley version of Paddle2See project "Good Vibrations". Here you can change the angular frequency and the amplitude of the simple harmonic motion of the first particle. Also, you can create pulses on the string by clicking and dragging the hand or another particle. Ch ... show more
Drawing_magnetic_lines
By: dapontesgr
Views: 105 | LoveIts: 1
Description: Διαθέτουμε ένα ραβδόμορφο μαγνήτη (πηγή) και εννέα μαγνητικές βελόνες (υποθέματα - ανιχνευτές του μαγνητικού πεδίου). Σκοπός του project είναι η εικονογράφηση του μαγν ... show more
Six_bug_problem
By: dapontes
Views: 104 | LoveIts: 8
Description: Six bugs start from the corners of a hexagon. Each one moves on the direction of its clockwise neighbor. I used the very nice sprite-bug from a project of paddle2See. Thanks.
Right_angle_mirror
By: dapontes
Views: 104 | LoveIts: 4
Description: RIGHT ANGLE MIRROR: 3 images ................ INSTRUCTIONS 1) Green flag to start 2) Click on the stage (white region of the screen) 3) Move the mouse (without click) and the pen will draw anything you want 4) SPACE bar to record the motion of the pen 5) Press the button PLAY to draw the 3 images. T ... show more
Isochrone Problem
By: dapontes
Views: 103 | LoveIts: 5
Description: "If from the highest or lowest point in a vertical circle there be drawn any inclined planes meeting the circumference, the times of descent along these chords are each equal to the other" Galileo Galilei in his 1638 masterpiece, Dialogues Concerning Two New Sciences (Proposition VI)
Engine_animation
By: dapontesgr
Views: 101 | LoveIts: 5
Description: http://en.wikipedia.org/wiki/Four-stroke_engine For a simulation in Scratch look at my project http://scratch.mit.edu/projects/dapontes/2198212
velocity_pilot_game
By: dapontes
Views: 90 | LoveIts: 3
Description: To pilot the cat moving on the road click and drag the end of the vector-velocity. Green flag and click the button... It works better in presentation mode.
Standing_Longitudinal_Waves
By: dapontes
Views: 87 | LoveIts: 8
Description: Green flag to start. Green flag and choose demo 1 or 2. Thanks ahaanomegas for the music.
RGB_colors
By: dapontesgr
Views: 87 | LoveIts: 2
Description: Σκέφτηκα να χρησιμοποιήσω το περιβάλλον του scratch για να φτιάξω ένα μικρό εξειδικευμένο πρόγραμμα (applet) με σκοπό να πειραματιστώ με την ανάμιξη των βασικών χρωμάτων ... show more
charging by contact
By: dapontesgr
Views: 84 | LoveIts: 1
Description: Green flag to start... Διαθέτουμε δύο ίδιες μεταλλικές σφαίρες στερεωμένες σε βάσεις από μονωτικό υλικό. Η μια, ηλεκτρικά ουδέτερη, παραμένει ακίνητη στο αριστερό μέρεος τ ... show more
curves from circular motions
By: dapontesgr
Views: 82 | LoveIts: 3
Description: Ας φανταστούμε ένα σημειακό αντικείμενο το οποίο πραγματοποιεί ομαλή κυκλική κίνηση γύρω από ένα σταθερό κέντρο ακτίνας ρ1 και γωνιακής ταχύτητας ω1 ως προς ακίνητ ... show more
two_stars_one_planet_yo_yo
By: dapontes
Views: 79 | LoveIts: 2
Description: I used the Law of universal gravitation (Newton) and the method of Newton-Feynman to calculate the positions of the planet. The idea of this project is based on an application of program MODELLUS. Click on the green flag to start.
Kid-Rocket_Game2
By: dapontes
Views: 78 | LoveIts: 4
Description: It was 1986 when I first met the DYNATURTLE of Andrea DiSessa (in LOGO). Now, I use it in SCRATCH...... (no gravity, no friction)...... You can put the Kid-Rocket in motion by applying impulses or "KICKS" to it in vertical and horizontal directions. Every KICK add a velocity in the previo ... show more
Trampoline_interactive_remix
By: dapontesgr
Views: 78 | LoveIts: 2
Description: Χρησιμοποίησε τα πλήκτρα (δεξιά-αριστερά) ή τα κουμπιά-βέλη για να ελέγχεις την ταχύτητα της μπάλας. Με το μεταβολέα g αλλάζουμε την επιτάχυνση της βαρύτητας. Green fla ... show more
slinging_simulation_new
By: dapontes
Views: 75 | LoveIts: 5
Description: My project is based on "slinging simulation" of deatheater. I used a different method (Newton-Feynman) and I've added two sliders (k and b) to control the motion. Drag the cat with your mouse after it starts slinging. Press the green flag to start.
wave on a string
By: dapontesgr
Views: 70 | LoveIts: 1
Description: Double click on green flag to start. Στην οθόνη διαθέτουμε ένα σύστημα (σχοινί) που αποτελείται από μια σειρά μικρών σφαιρών (φανταζόμαστε ότι συνδέονται μεταξύ τους με ελατήρια). Τ ... show more
Reflection Symmetry
By: dapontes
Views: 69 | LoveIts: 8
Description: Reflection symmetry for 4 objects. It works only in JAVA player. 1.Green flag to start 2.Click and drag the objects (ghost, girl, boy)
Relative Motion (II)- Circular motion
By: dapontesgr
Views: 67 | LoveIts: 1
Description: Μια σφαίρα εκτελεί ομαλή κυκλική κίνηση (με γωνιακή ταχύτητα ω και ακτίνα R). Ο παρατηρητής - γάτα κινείται με σταθερή ταχύτητα υ=ωR. Αυτό που αντιλαμβάνεται η γάτα εί ... show more
reflection_mirror_2
By: dapontesgr
Views: 67 | LoveIts: 0
Description: Μια δεύτερη εφαρμογή της ανάκλασης. Με κλικ και σύρσιμο μπορείς: α) Να αλλάζεις τη θέση της μέλισσας β) Να τοποθετείς το κορίτσι σε όποιο σημείο της οθόνης επιθυμ ... show more
Boyle_anim
By: dapontesgr
Views: 66 | LoveIts: 1
Description: To project βασίζεται στο animation που βρήκα στο διαδίκτυο http://www.grc.nasa.gov/WWW/K-12/airplane/aboyle.html Ο Άγγλος επιστήμονας Robert Boyle, στα μέσα του 1600, μελέτησε τη σχέση μεταξύ της πίεσης P ... show more
Projectile Motion- Virtual Lab
By: dapontesgr
Views: 65 | LoveIts: 2
Description: Πρόκειται για remix ενός προγράμματος που έφτιαξα παλιότερα (dapontes) με σκοπό να επινοήσω δραστηριότητες για τη διδασκαλία της Φυσικής. Οδηγίες (instructions): 1. Επιλέγουμ ... show more
Απόδειξη της σχέσης α=υ2/R
By: dapontesgr
Views: 64 | LoveIts: 3
Description: Βασίστηκα σε ένα video (μιας ενδιαφέρουσας απόδειξης της σχέσης α=υ^2/R) που ανάρτησε ο Στέργιος Ναστόπουλος στο Κοινωνικό Δίκτυο "Διδάσκοντας Φυσικές Επιστήμες".
cycloid_new
By: dapontesgr
Views: 63 | LoveIts: 1
Description: Πειραματίζομαι με την κυκλοειδή καμπύλη. Πρόκειται για remix του προγράμματος cycloide (dapontes). ΟΔΗΓΙΕΣ 1.Με τους μεταβολείς ν και ω επιλέγω τη μεταφορική ταχύτητα και ... show more
force_comp
By: snikos_scratch
Views: 58 | LoveIts: 5
Description: Σύνθεση και ανάλυση δυνάμεων σε επίπεδο για τη Β' Τάξη Γυμνασίου. Έκδοση 1.1, διόρθωση οριακών συνθηκών. 1.2 Προσθήκη συνισταμένης των F1, F2 Force analysis and synthesis for the 8th grade. Ver ... show more
wave_Longitudinal_new
By: dapontesgr
Views: 58 | LoveIts: 0
Description: Double click on green flag to start. Ένα εικονικό εργαστήριο διαμηκών κυμάτων (Remix του προγράμματος "Εγκαρσίων κυμάτων").
Timeline_Scientists on Stamps_1
By: dapontesgr
Views: 57 | LoveIts: 4
Description: Οι επιστήμονες (από το Δημόκριτο μέχρι τον Καρτέσιο) σε γραμματόσημα που άντλησα από το διαδίκτυο. Με κλικ και σύρσιμο στο μεταβολέα (στο κάτω μέρος της οθόνης) ελέγ ... show more
Kid-Rocket_Game (on the moon)
By: dapontesgr
Views: 57 | LoveIts: 2
Description: It was 1986 when I first met the DYNATURTLE of Andrea DiSessa (in LOGO). Now, I use it in SCRATCH...... (gravity on Moon, no friction)...... 1.Space bar to start 2.USE the arrows keys to give a "KICK" to Kid-Rocket in the horizontal and vertical directions. Look at my project htt ... show more
charging by induction_1
By: dapontesgr
Views: 53 | LoveIts: 2
Description: Green flag to start... Look at another project (dapontes) http://scratch.mit.edu/projects/dapontes/1741829
Relative Motion (III)- Simple Harmonic Motion
By: dapontesgr
Views: 50 | LoveIts: 0
Description: Μια σφαίρα εκτελεί Απλή Αρμονική Ταλάντωση (με γωνιακή ταχύτητα ω και πλάτος Α). Ο παρατηρητής - γάτα κινείται με σταθερή ταχύτητα υ_cat. Αυτό που αντιλαμβάνεται η γάτ ... show more
Relative Motion (V)- Free Fall
By: dapontesgr
Views: 49 | LoveIts: 0
Description: Μια σφαίρα πέφτει κατακόρυφα προς τα κάτω (ελεύθερη πτώση). Ο παρατηρητής - γάτα κινείται με σταθερή ταχύτητα υ_cat. Αυτό που αντιλαμβάνεται η γάτα είναι μια οριζόντια ... show more
Free_fall_bounce
By: dapontesgr
Views: 47 | LoveIts: 1
Description: Πρόκειται για προσομοίωση της ελεύθερης πτώσης και της αναπήδησης της (ελαστικά) στο έδαφος. Με κλικ και σύρσιμο μεταφέρω τη μπάλα σε όποιο σημείο της οθόνης επιθυ ... show more
Relative Motion (I)- Vertical shot
By: dapontesgr
Views: 44 | LoveIts: 0
Description: Μια σφαίρα εκτοξεύεται κατακόρυφα προς τα πάνω με ταχύτητα υ0. Ο παρατηρητής - γάτα κινείται με σταθερή ταχύτητα υ_cat. Αυτό που αντιλαμβάνεται η γάτα είναι μια παραβο ... show more
Free_fall_Newton_Feynman
By: dapontesgr
Views: 39 | LoveIts: 2
Description: USE Flash player. Ένα ακόμα project Προσομoίωσης και Στροβοσκοπικής αναπαράστασης της ελεύθερης πτώσης (χωρίς τριβές) με εφαρμογή της τεχνικής Newton-Feynman. Επιλέγουμε την επιτάχ ... show more
Relative Motion (IV)- Rain Drop
By: dapontesgr
Views: 32 | LoveIts: 0
Description: Μια σταγόνα πέφτει κατακόρυφα προς τα κάτω με ταχύτητα υ_rain. Ο παρατηρητής - γάτα κινείται με σταθερή ταχύτητα υ_cat. Αυτό που αντιλαμβάνεται η γάτα είναι μια ευθύγραμ ... show more
Free_fall_Tables(y,v,t)
By: dapontesgr
Views: 30 | LoveIts: 1
Description: Η στροβοσκοπική αναπαράσταση της ελεύθερης πτώσης και οι πίνακες τιμών χρόνου, θέσης και ταχύτητας. Επιλέγω την επιτάχυνση της βαρύτητας και πατάω το κουμπί Στροβ ... show more
Free_fall_Simulation_Strobo
By: dapontesgr
Views: 29 | LoveIts: 1
Description: Ένα project Προσομoίωσης και στροβοσκοπικής αναπαράστασης της ελεύθερης πτώσης (χωρίς τριβές) Επιλέγουμε την επιτάχυνση της βαρύτητας και το βήμα - χρόνου dt, Με κλικ κ ... show more
Right_angle_mirror (Remix)
By: dapontesgr
Views: 26 | LoveIts: 0
Description: Στη λευκή περιοχή μπροστά από τους δύο καθρέφτες μπορείς να σχεδιάσεις "μονοκονδυλιά" το σχήμα που επιθυμείς. ΟΔΗΓΙΕΣ 1.Πράσινο σημαιάκι για ξεκίνημα 2.Με κλι ... show more
