Egg Definition and 245 Threads

An egg is the organic vessel containing the zygote in which an embryo develops until it can survive on its own, at which point the animal hatches. An egg results from fertilization of an egg cell. Most arthropods, vertebrates (excluding live-bearing mammals), and mollusks lay eggs, although some, such as scorpions, do not.
Reptile eggs, bird eggs, and monotreme eggs are laid out of water and are surrounded by a protective shell, either flexible or inflexible. Eggs laid on land or in nests are usually kept within a warm and favorable temperature range while the embryo grows. When the embryo is adequately developed it hatches, i.e., breaks out of the egg's shell. Some embryos have a temporary egg tooth they use to crack, pip, or break the eggshell or covering.
The largest recorded egg is from a whale shark and was 30 cm × 14 cm × 9 cm (11.8 in × 5.5 in × 3.5 in) in size. Whale shark eggs typically hatch within the mother. At 1.5 kg (3.3 lb) and up to 17.8 cm × 14 cm (7.0 in × 5.5 in), the ostrich egg is the largest egg of any living bird, though the extinct elephant bird and some non-avian dinosaurs laid larger eggs. The bee hummingbird produces the smallest known bird egg, which weighs half of a gram (around 0.02 oz). Some eggs laid by reptiles and most fish, amphibians, insects, and other invertebrates can be even smaller.
Reproductive structures similar to the egg in other kingdoms are termed "spores," or in spermatophytes "seeds," or in gametophytes "egg cells".

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  1. T

    Egg Safety Vehicle (Egg Drop Project in a car)

    "Egg Safety Vehicle" (Egg Drop Project... in a car!) Hey! This is my first post so sorry if I do anything against protocol. I need to design a sort of egg protection vehicle. I will put the egg inside of the car which will in turn be rolled down a ramp and crash into one of my classmate's...
  2. S

    Real or Virtual Particles: Chicken or the Egg?

    Do real particles "cause" virtual particles, or do virtual particles "cause" real particles? Put another way, is it so that real particles actually exist in and of themselves and interact as normally described by transferring virtual particles with each other. OR, Are only virtual...
  3. H

    Egg drop with two straws and 3 sheets of paper

    OK well as the title says I have to do an egg drop using only a foot of tape, 3 sheets of computer paper, and 2 straws (they have the bendable end). So is there any suggestion of what will work best? The egg will be dropped from 10cm to begin with, and then the drop height will increase until it...
  4. A

    How Can I Create an Effective Parachute for My Egg Drop Project?

    For a science project we have to make an ''egg protector''. It has to have: -parachute and -base to hold egg in (I just joined 30 minutes ago and could not find a forum like this. So sorry if this is a duplicate.) Aaaaaanyways, our group has to drop it from a 5m tall height, the...
  5. M

    Finding how much a 5 cm pad compresses when an egg hits it

    Homework Statement A 56.0 g egg falls 120.0 m from rest and hits a 5.00 cm thick foam pad. The egg does not break, but instead compresses the foam pad. It is 6.25 ms from the moment the egg hits the foam ad until all downward motion (falling) is stopped. Assuming there is a constant upward...
  6. G

    Momentum-an egg dropped on the ground vs. grass

    Homework Statement an egg dropped on the road breaks, while the egg that is dropped on grass doesn't break...why? a. the change in momentum is greater b. change in momentum is less c. the time interval for stopping is greater d. time interval for stopping is less Homework Equations...
  7. C

    How Can You Design an Egg Drop Mechanism to Reuse Energy?

    1. The problem statement Ok so I have to have an egg drop from 6 meters onto a mechanism then from a primary sruface over a construction cone onto a secondayr surface and then the egg has to trigger a mechanical deivce that captures the egg in a unique way, trasnferring its energy back to...
  8. M

    Egg Car Project: Build a Car and Egg for Class

    for class we have to make a car with an egged attached to the front (so its protruding). the car has to be able to stop on its own and travel distances of 6m, 8m, 10m, and one even numbered mystery distance between 5m and 10m. compressed gases, explosives, and premade parts may not be used. i...
  9. A

    Exploring the Egg Shell Theory of the Universe

    Dear reader, Of course I searched the site to see other persons discussing the the egg shell theory, but I did not find it. So, perhaps someone can direct me to the subject. I am interested in the theory that when the universe was created in a big bang, the only part of it is the part we...
  10. T

    The Great Egg Drop Contest: Design a Protection Device

    An egg is hard, but yet delicate food that people have been making contests of, for many years. But i am part of one that i lack the physics to figure out the perfect device here are the simple rules of this contest. Holy Omelets Batman… It’s the Egg Drop Contest! Design a egg protection...
  11. T

    Creating an Egg Drop Contraption: My First Try

    I was thrilled when I got the Lab Sheet for the Egg Drop! I had seen all of the older kids do it and now it was my chance! It never clicked with me that there were actual concepts and directions in play so that brings me here, making yet ANOTHER egg drop thread! Basically we are being graded...
  12. I

    Constructing the Perfect Egg Drop Device

    we are required to do an egg drop. all we are allowed to use is 2 news paper spreads, 2 m string, and masking tape. what's the best way to use these materials in order to be able to drop a hardboiled egg from a 4th floor without any cracks. thanks!
  13. W

    Can a Stud Sensor Differentiate Between Raw and Hard-Boiled Eggs?

    Our design lecturer require us to come out with a black box which can differentiate between raw egg and hard-boiled egg. On the black box, there should be one inlet and two outlets (one for raw, the other for hard-boiled).Dimension constraints of the black box is 500mm x 500mm x 500mm. The power...
  14. D

    Does Newtons of an Egg drop vary accordingly to height?

    According to my knowledge, I am able to apply Newton's second law on an egg for an egg drop; the resulted force from that can would be the force which occurs when it hits the ground. That force would also be reflected when it hits the ground according to Newton's third law. What is confusing...
  15. B

    Sliding egg I think the books wrong, could someone please verify?

    ***EDIT***Sorry for a second there, I tried to convince myself that FN was not equal to Fg, but it must. Given the coefficient of static friction (.4) between an egg and a pan, what is the smallest angle from the horizontal taht will cause the egg to slide? Here's my drawing...
  16. B

    Incredibly Difficult Egg Drop Challenge

    Okay, I am totally baffled here. For our final project in Algebra we have one class period to build an egg drop carrier. The egg will be dropped from 8 feet, and we have VERY LIMITED materials. - 8 Straws - 1 6x6 Piece of Thick Paper - 3 Tissues - 2 ft. of Masking Tape Another rule is that...
  17. M

    Designing the Perfect Egg Drop Project for Physics Class

    So we have an egg drop project due at the end of the semester for my introductory physics class. We're dropping it from the second story, which is about 3 meters down I believe. The materials we are given are 20 drinking straws, 30 cm of tape, and 1 8x11 piece of paper that we can cut/fold and...
  18. C

    Egg Launch and Recover-I need NASA level help

    Egg Launch and Recover--I need NASA level help! Homework Statement Another variation on the classic Egg Launch and Egg Drop Science projects, only this 9th grade science teacher believes in upping the ante. Goals are to launch a raw egg, achieving at least 30 feet of vertical height, using...
  19. wolram

    Borek's Thoughtful Card Makes for a Better Egg

    YAY, thanks for card Borek, i think the hair is better on the egg.
  20. T

    Stabalizing an egg drop project

    Homework Statement I have designed an egg drop project that performs just as I had hoped and portected the egg perfectly. I would need to make the object as stable as possible while it is falling. My container is the foam molds that held the screen for my computer. The structure of the foam...
  21. jegues

    Designing an Egg Mover: Brainstorming and Constraints

    Egg Mover - Design ideas!? We've been assigned a design project and I'm just looking for some thoughts, comments, opinions and ideas. I'd like to get few different perspectives on the design problem. I've attached a picture that depicts what the system looks like. Homework Statement...
  22. M

    Designing a Device for Catching Eggs Dropped from Various Heights

    Device that catches an egg! We have a physics project. We are droping an egg from 9.91 meters. We have to use a device that will catch an egg from that height. We can use anything that we want to use to catch the egg. I am trying to get the least height. What materials should we use or...
  23. Y

    Creative Egg Drop Project Ideas without Restrictions | Homework Help

    Homework Statement So, as you all know, everyone has to do an egg drop project sometime. Well, I got mine today. Yes, I know there are other similar topics, but they all the ones I found had a bunch of restrictions that didn't apply. Rules: -Any materials may be used -no kits -no...
  24. C

    Creating a Popsicle Stick Parachute: The Egg Drop Challenge

    Okay so we are going to drop an egg from three stories high. The only materials we are allowed to use is popsicle sticks, glue, string, and garbage bags...HELP!
  25. M

    Egg Drop Challenges: Ensuring Safe Delivery of 3 Grade A Eggs

    The egg drop rules are that the container must be less than 1600 cm cubed in volume, wiht no dimension greater than 25 cm and a maximum mass of 1 kg. The eggs must be able to be easily removed after the drop from 2.5 meters. Parachutes may not be used and the device must be in one piece. Three...
  26. J

    Why Doesn't an Egg Harden When Boiled at High Altitude?

    Homework Statement an egg boiled for 4 minutes at the top of a mountain does not harden Homework Equations The Attempt at a Solution pressure is lower at the top of a mountain than at sea level. Is the issue here the fact that pressure inside the egg does not build up sufficiently to...
  27. S

    Egg Drop Design Using Only Paper

    Homework Statement My physics teacher is making us do an egg drop after only being in school for two weeks. We can only use up to four 8.5" x 11" sheets of regular computer paper and as much tape as we want. The tape cannot be used as more than a form of attachment. Meaning that the tape...
  28. zoobyshoe

    Exploring the Mystery of Egg Cleansing

    "Egg Cleansing" A friend of mine, whose mother grew up in a small village in Mexico, related to me her mother's story of the local "Bruja". Among other things, this woman performed an "egg cleansing" on people to rid them of bad mojo they had collected. She would rub a common chicken egg over...
  29. J

    Polarizing radar waves with egg slicers

    If I bought a radar gun, a radar detector, and three egg slicers, should I be able to demonstrate the three polarizer crossed polarization tricks? TIA, Jim Graber
  30. S

    How Can You Build an Effective Fragile Egg Container for a School Project?

    Homework Statement My has is having a in-class project and I want to be prepared for it. The objective is to build an egg container, as fragile and possible, meaning that it will hold the egg strong and prevent it from cracking. How this project is evaluated is by throwing the egg container...
  31. B

    Egg Movement: How to Simulate an Egg's Movement on a Level Plane

    Hi guys, Im trying to create a simple application for a college project based on an egg moving around a level plane. I've looked around and I've been finding it very difficult to find any equations to simulate the movement of an egg. If anyone has any ideas or could point me in the right...
  32. L

    Find the Function of a Bungee Cord for Egg Drop

    Homework Statement For my Calc based Physics class we will be given an egg, a required height and a bungee cord (non-linear). We're to have already come up with a formula for this bungee cord to compute the required length so that we'll be able to drop the egg from the height and come as close...
  33. Spinnor

    Egg drop physics, making a safe landing.

    Say we have a rectangular wire frame about 7 inches in size, see: http://www.schillereng.com/EggDrop1.jpg Let an egg of mass m, say 40g, be suspended in some type of "seat" as in the above jpg. with rubber bands going from the the eight corners of the frame to the egg seat. Let us say the...
  34. B

    Egg Crate on Pickup Truck: Maximum Speed?

    Homework Statement A crate of eggs is located in the middle of the flatbed of a pickup truck. The truck is negotiating a curve in the road that may be considered as an arc of a circle of radius 35 m. If the coefficient of static friction between the flatbed and the crate is 0.66, with what...
  35. H

    Egg Drop Challenge: Solving the Dilemma with Limited Materials

    Homework Statement We all know the egg drop, and I am stuck as to what to do with the extreme little amount of materials we are allowed to use. Here they are: 1 regular supermarket egg 5 sheets of printer paper 1m of scotch tape We are to drop it once from the ceiling of our...
  36. Z

    Can a Cone Save an Egg from a 15-Meter Drop?

    OKay, i have to do the egg drop for class and I can't think of any ideas. All my trys have failed and the parameters are killing me. It has to be: -made up of 100% biodegradable products. No plastics, metals, rubber, sponges, real sponges, not even biodegradable styrofoam. Basically I can...
  37. L

    Design an Egg Encasement to Survive a 3m Drop

    Hi, For my physics class I have to design some sort of encasement around an egg so that it will survive a 3m drop. The encasement (including the egg) can be no larger than 150 cubic centimeters. Any ideas? Thank you
  38. K

    Egg Drop Design Challenge: Help Create a Design

    Egg Drop Design Help! 1. Ok, I need some ideas for an egg drop project in my class. A. Dropping from 7 Ft, then 12 Ft, and then 25 Ft... Consecutively. B. Can't be more then a Meter in height. C. Allowed to use the following: 1. 15 Popsicle Sticks 2. 15 Straws...
  39. F

    Egg Drop Contest for Science Survivor

    Info coming soon, have to go to lunch. ----- Materials we are Given: Raw Egg 2 Full Sheets of Newspaper 2 Rubber Bands 6 Toothpicks Glue (Unlimited) ----- You can only use materials from parts department. Materials cannot be returned. You must eb able to take capsule apart during...
  40. C

    Creating a Shock-Absorbing Design for an Egg Drop

    I need ideas to build a design that will prevent an egg from cracking or breaking. Guidelines: Design has to have a mass of <300g. Must fit into a Sterillite Plastic box Cannot simply be wraped in something (i.e. a pillow, bubble wrap, t-shirts) Cannot reduce velocity (wings...
  41. S

    Human fetus development inside an egg

    Just a food for thought. Firstly - can a fertilized human ovum develop into any stage of embryo inside of a bird egg (chicken egg, or ostrich egg or whichever...). That conceptual difference between how ingeniously and conveniently birds come to life and how unpractical and actually...
  42. D

    Egg drop project with specific guidelines

    I've been assigned the infamous egg drop project, and have been brainstorming as many ideas as possible. However, I have many restrictions, and the one I am having the most trouble with is size. My container cannot be any larger than 4"x4"x6", though it must protect the egg from a fall of...
  43. T

    How Do You Design an Egg Drop Container That Is Also Crush-Resistant?

    Our instructor has given us the task of coming up with a container to drop an egg from a distance of 30' and not break. Container can't be any larger than 12"x12"x12" and no parachutes or anything that will affect fall/normal gravity. Egg must remain accesible to verify that it hasn't broken. No...
  44. C

    Derivation of boiling an egg formula using laplace transformation

    I have been set a challenge to derive the formula for boiling a “perfect” soft-boiled egg, (essentially a thermal diffusion equation), in terms of the mass of the egg, the specific heat capacity and thermal conductivity of an egg, the initial temperature of the egg and the temperature of the...
  45. J

    Falling egg question (with energy equations)

    An egg of mass 5.8*10^-2 is dropped from a height of 1.5m onto a floor. Assuming air resistance is negligable, calculate for the egg: a) loss of potential energy. b) the kinetic enrgy just before impact. c) the speed just before impact d) the momentum just before impact. So far i have...
  46. A

    Egg experiment (increase time of collision)

    [ Hi, we have to do an experiment in school in which we have to throw a raw egg from the first floor and prevent it from breaking my using concepts involving physics namely impulse. since almost everyone is doing something with parachutes i decided to go for something else like wrapping the...
  47. A

    EGG drop with elastic potential energy.

    Hi I am trying to find at what hight i need to drop a egg from 2-6 meters. We will start with 2 meters. The weight of the egg and device holding the egg is .11kg together. I no the formulas for EPE and EP " EPE=1/2KX^2 AND PE=mgh. The question is now how to find where on the elastic band to...
  48. A

    Egg Drop with elastic potential energy.

    Hi I am trying to find at what hight i need to drop a egg from 2-6 meters. We will start with 2 meters. The weight of the egg and device holding the egg is .11kg together. I no the formulas for EPE and EP " EPE=1/2KX^2 AND PE=mgh. The question is now how to find where on the elastic band to...
  49. S

    Can an egg be balanced on its end?

    Before I ask my question, I understand its possible to balance an egg. I just went out to buy some eggs and did it. I seem to have a magic egg that literally takes me about 3 seconds to balance. (I did cheat a bit. I shook it up pretty nice to break the chalaza to lower the center of gravity.)...
  50. S

    An egg is fried in a skillet, a chemical or physical properties?

    Please help urgent Please help, I have few questions 1.Natural gas burns with a yellow flame, a chemical or physical properties? 2.An egg is fried in a skillet, a chemical or physical properties? 3. When iron is dissovled into a acid. Has the iron atoms destroyed? Give answers with...
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