Course 1: Fundamentals of Light and Lasers - Widgets

# Widget Title and Description Screenshot
Module 1: Nature and Properties of Light Go to Top ↑
1. Module 1 - Widget 1

Frequency, Wavelength, and Amplitude

Vary amplitude, wavelength and/or frequency, and see the consequences: size, color, and spacing of peaks. Propagation can be turned on/off.

2. Module 1 - Widget 2

Traveling Electro-magnetic Wave

Vary amplitude and wavelength to see a three-dimensional representation of the E-M wave. Click/drag the screen to change the orientation of the wave. Propagation can be turned on/off.

3. Module 1 - Widget 3

Application of Snell's law

Change angle of incidence (by clicking/dragging source), vary index of refraction in medium 1 and medium 2, and observe angle of refraction, or total internal reflection in medium 1.

4. Module 1 - Widget 4

Double-slit Diffraction

Click/drag to change wavelength of incident light, spacing of double-slit, and distance of double-slit from the screen to observe the effect on the diffraction pattern on the screen, portrayed as both intensity pattern and intensity graph.

5. Module 1 - Widget 5

Planck's Law, Wien's law, Stefan-Boltzman Law.

Click/drag to change the black-body temperature to observe the effect on the relative intensity of radiation over all wavelengths (including the wavelength at which the maximum occurs) and the power radiated as a function of the black-body temperature.

Module 2: Optical Handling and Positioning Go to Top ↑
6. Module 2 - Widget 1

Calculating with Snell's law

For various pairs of media (variable index of refraction), change the incident angle, and see the effect on reflection and refraction. Built-in calculator works to calculate Snell's Law. Take a quiz, to deduce the index of refraction of medium 2 by measuring the angles.

7. Module 2 - Widget 2

Brewster's Angle

Adjust index of refraction to see reflected/transmitted angles, showing polarized reflection when unpolarized light is incident at Brewster's Angle. Adjusting wavelength has no effect on the angle or the reflected/transmitted light.

8. Module 2 - Widget 3

Absorption Filters

A slightly adjustable bell curve (width and height), and adjustable center wavelength value, is shown on a graph to represent a filter of some transmission characteristics. Four actual filters can be overlaid on the graph for comparison.

Module 3: Light Sources and Laser Safety Go to Top ↑
9. Module 3 - Widget 1

Absorption Characteristics of the Eye

A slightly interactive replacement for Figure in text showing eye damage from various wavelengths. User reveals by clicking one of three buttons.

10. Module 3 - Widget 2

Wave Addition

Add two, three, or four waves and see the resultant wave. Each wave includes controls for On/Off, amplitude, phase angle, wavelength. Destructive and Constructive buttons show random examples of two waves.

Module 4: Basic Geometrical Optics Go to Top ↑
11. Module 4 - Widget 1

Snell's Law

For various pairs of media (variable index of refraction), change the incident angle, and see the effect on reflection and refraction. Built-in calculator works to calculate Snell's Law. Take a quiz, to deduce the index of refraction of medium 2 by measuring the angles.

12. Module 4 - Widget 2

Calculating Critical Angle

13. Module 4 - Widget 3

Angle of Minimum Deviation

Change index of refraction, turn On a laser beam, rotate a prism to observe and measure with protractor the angle of incidence, refraction, reflections, and exit. Using prism angle (shown) and minimum angle of deviation allows student to calculate index of refraction of prism. Animate slowly rotates prism automatically.

14. Module 4 - Widget 4

Concave/Convex Mirrors

Drag Object, center-point, or focal point of mirror to see the effect on image size and placement, both real and virtual images, with tracing of two rays depicted. Choose between concave and convex mirrors.

15. Module 4 - Widget 5

Converging Lens

Drag Object or focal point of lens to see the effect on image size and placement, both real and virtual images, with tracing of two rays depicted. Thin-lens and Magnification equations are updated, and clicking those values highlights them in the illustration. Choose between bi-convex, converging meniscus, and plano-convex lens shapes.

16. Module 4 - Widget 6

Diverging Lens

Drag Object or focal point of lens to see the effect on image size and placement of virtual images, with tracing of two rays depicted. Thin-lens and Magnification equations are updated, and clicking those values highlights them in the illustration. Choose between bi-convex, diverging meniscus, and plano-concave lens shapes.

17. Module 4 - Widget 7

Lens-Maker Equation

Drag Object or focal point of lens to see the effect on image size and placement, both real and virtual images, with tracing of two rays depicted. Also, change the lens, including its index of refraction, and radius of curvature of either surface. Optionally, change the index of refraction of the air/gas outside the lens. Hovering over the terms in the equation highlights the information in the graphic.

Module 5: Basic Physical Optics Go to Top ↑
18. Module 5 - Widget 1

Ripple Tank

19. Module 5 - Widget 2

Interference Patterns

20. Module 5 - Widget 3

Single-slit Diffracton

21. Module 5 - Widget 4

Polarization

22. Module 5 - Widget 5

Brewster's Angle

Adjust index of refraction to see reflected/transmitted angles, showing polarized reflection when unpolarized light is incident at Brewster's Angle. Adjusting wavelength has no effect on the angle or the reflected/transmitted light.

Module 6: Principles of Lasers Go to Top ↑
23. Module 6 - Widget 1

Stimulated Emission

An animated graphic (user can restart it and control the animation speed) depicting the process of stimulated emission, starting with a cavity of charged atoms, starting with a random emission, eventually resulting in a beam of emitted photons..

24. Module 6 - Widget 2

X and Y Laser Alignment

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