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You should always look for ways to modify a question to obtain more material for use in class. I think a good addition to this question might be "Name a specific 'piece' of information you obtained today and discuss how you used it."

Communication

Cell phones and the Internet have not always been around, nor are they always the preferred choice of communication today. Name a situation (past or present) where two or more people must communicate where simple voice or Internet communication is not possible. How have they solved this difficulty in communication?

Here, I wished to find examples where a simplified "alphabet" is developed so that information can be conveyed with low probability of interpretative error. It serves as a lead-in to Modulation and Forward Error Control.

    Multiple student responses

  • A situation that I've experienced where it was preferred and pretty much necessary was at the place where I work, which is a record label. We are very near the release of a new album of one our bands and we received the first shipment of vinyl that we're distributing. Because vinyl is such a special experience for music lovers and a very textured media form, we all like listening to new vinyl together as a company in the same room to listen to any flaws in the vinyl. It's hard to judge the sound quality via video conferencing and sounds completely different than the digital version.
  • In the past, distance was the major obstacle that prevented people from keeping in touch. If anything, you has to utilize transportation to decrease this distanceand so you could talk face to face. Thanks to Alexander Graham Bell and the use of wires, people were able to fix this.
  • In the absence of electronic communication, people must communicate through other means. Physical mail, messengers, or seeing the individual in person are easy ways(though perhaps not so easy as using technology) to communicate. A friend of mine doesn't own a cell phone, so I had to go knock on his door if I wanted to talk tohim.
  • In WWI there was only morse code between military officers and personell.
  • People have held meetings. This is still a common practice in businesses, communities, and schools.
  • In the past there was no internet nor a simple way to communicate with people far away or in another town. In order to communicate they would send letters through mail.
  • One of the most notable examples of communication without voice or Internet availability is Morse code. In order to transmit messages without the use ofvoice communication, messages are encoded into a series of lights, clicks, or tones. Morse code is usually transmitted via radio and requires the use of a"key" to form the message and a translator to decode it on the receiving line. The concept of coding and decoding messages is the crux of the solution todeveloping alternate forms of communication.
  • When my dad was in college, there is no telephone in his hometown, if he wanted to communicate with his family, he would write a letter to them. It always took twoweeks or more to reach. Or if there was a emergency, he could telegraph. Comparedto letters, it was much quicker but it still needed around 2 days.
  • Not sure about the context, but my first answer would be by writing and traditional mail, sounding some kind of signal whether it be by sound or lightdisplay (such as smoke from a fire or a bell being struck), telegraph, or other third-party communication. Cell phones and the Internet have solved suchproblems by making individual communication completely portable and geographically pervasive. There are cell towers all over the globe now, and evenremote reaches can have areas where one can receive a cell phone signal making communication the rule rather than the exception.

Summary of answers

Many answers contained US mail or face-to-face communication (unintended answers). Others contained smoke signals and Morse code (predictable, less interesting). Notice, however, that the first item above brings a personal aspect to the table in the form of a "recording studio." The student's mention of a recording studio could be expanded so that we could discuss how the recording contractor communicates with the artist during the recording session without interrupting the recording.

The question might be reworded so that it might extract more abstract ideas like American Sign Language or scuba-diver signs. One way to do so may be to include ASL and scuba diver situations directly in the question to push them away from the all-too-obvious answers. I suspect that sometimes it may be better to saturate the question with potential applications to provide enough examples to lead the students away from what might be dominant and trivial answers.

Digital information

There are many ways to digitize information. For example, I can digitize the approximate flavor of the honey I harvest from my honeybees. Honey is made from many different flowers. In Illinois, major sources include:
  1. Alfalfa - Medicago sativa
  2. Dandelion - Taraxacum officinale
  3. Soybean - Glycine max
  4. Sweetclovers, Melilotus species
  5. White sweetclover-Melilotits alba
  6. Yellow sweetclover - Melilotus officinalis
  7. True clovers, Trifolium species
  8. Alsike clover - Trifolium hybridum
  9. Ladino - Trifolium repens
  10. Red clover - Trifolium pratense
  11. White Dutch - Trifolium repens
I can digitize the flavor of my honey by asking the questions:
  1. Was alfalfa in bloom during the honey flow? Yes/No
  2. Was dandelion in bloom during the honey flow? Yes/No
  3. etc...
The answers to my question would produce a 11-bit binary file to roughly describe the flavor my honey. Demonstrate how you can “digitize” something in your life.

Student response "a"

I can digitize my life by assigning binary numbers to the muscle group I am working out that day, and to get even more specific, i could assign numbers to particular workouts that i am doing within a givenworkout.
  • Back 001
  • Chest 010
  • Arms 100
  • Legs 011
  • Shoulders 110
  • Cardiovascular Exercises 111
  • Lat-pull downs 0001
  • Rows 0010
  • Pull-ups 0100
  • flat bench 1000
  • incline bench 0011
  • push-ups 0111
  • etc...

Other answers were less specific on how digitization would actually be applied. These also make good examples in lecture where you can have the students make suggestions on how to apply 0s and 1s to the information to make it "searchable". See the next response for an example.

Student response "b"

I could digitize all the movies and books that I've ever read and owned by recording them into a data spreadsheet and organizing them by year/genre/author/title.

Questions & Answers

A golfer on a fairway is 70 m away from the green, which sits below the level of the fairway by 20 m. If the golfer hits the ball at an angle of 40° with an initial speed of 20 m/s, how close to the green does she come?
Aislinn Reply
cm
tijani
what is titration
John Reply
what is physics
Siyaka Reply
A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of 8.0 m/s. During its fall, how much work is done on the mouse by air resistance
Jude Reply
Can you compute that for me. Ty
Jude
what is the dimension formula of energy?
David Reply
what is viscosity?
David
what is inorganic
emma Reply
what is chemistry
Youesf Reply
what is inorganic
emma
Chemistry is a branch of science that deals with the study of matter,it composition,it structure and the changes it undergoes
Adjei
please, I'm a physics student and I need help in physics
Adjanou
chemistry could also be understood like the sexual attraction/repulsion of the male and female elements. the reaction varies depending on the energy differences of each given gender. + masculine -female.
Pedro
A ball is thrown straight up.it passes a 2.0m high window 7.50 m off the ground on it path up and takes 1.30 s to go past the window.what was the ball initial velocity
Krampah Reply
2. A sled plus passenger with total mass 50 kg is pulled 20 m across the snow (0.20) at constant velocity by a force directed 25° above the horizontal. Calculate (a) the work of the applied force, (b) the work of friction, and (c) the total work.
Sahid Reply
you have been hired as an espert witness in a court case involving an automobile accident. the accident involved car A of mass 1500kg which crashed into stationary car B of mass 1100kg. the driver of car A applied his brakes 15 m before he skidded and crashed into car B. after the collision, car A s
Samuel Reply
can someone explain to me, an ignorant high school student, why the trend of the graph doesn't follow the fact that the higher frequency a sound wave is, the more power it is, hence, making me think the phons output would follow this general trend?
Joseph Reply
Nevermind i just realied that the graph is the phons output for a person with normal hearing and not just the phons output of the sound waves power, I should read the entire thing next time
Joseph
Follow up question, does anyone know where I can find a graph that accuretly depicts the actual relative "power" output of sound over its frequency instead of just humans hearing
Joseph
"Generation of electrical energy from sound energy | IEEE Conference Publication | IEEE Xplore" ***ieeexplore.ieee.org/document/7150687?reload=true
Ryan
what's motion
Maurice Reply
what are the types of wave
Maurice
answer
Magreth
progressive wave
Magreth
hello friend how are you
Muhammad Reply
fine, how about you?
Mohammed
hi
Mujahid
A string is 3.00 m long with a mass of 5.00 g. The string is held taut with a tension of 500.00 N applied to the string. A pulse is sent down the string. How long does it take the pulse to travel the 3.00 m of the string?
yasuo Reply
Who can show me the full solution in this problem?
Reofrir Reply
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Source:  OpenStax, Diversity harnessing: content personalization for engaging non-stem students in stem topics. OpenStax CNX. Jun 21, 2013 Download for free at http://cnx.org/content/col11439/1.8
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