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Woodhull, John F.

John F. Woodhull - 1916
A certain man became the possessor of a motor boat which filled his summer with projects for interesting study.

John F. Woodhull - 1910
Looking from the window of my lecture-room I see powerful elm trees rocking in the wind. Certainly to bend them so far would require the power of many horses. How could anything by pushing against them move them so greatly unless it had a considerable weight. By roughly estimating the number of cubic feet I calculate that the air in this lecture-room weighs two tons; and with my anemometer I find that the wind is blowing forty miles an hour at present, and even while I am saying this a large limb has just been torn from the trunk of one of the trees. What might one expect if, say, the two tons of air which is in this lecture-room should move at the rate of forty miles an hour and strike against anything.

John F. Woodhull - 1910
If a man in one boat pull at the rope attached to another, the two boats will approach. If they be of equal size and load, they will both move at the same rate, in whichever of the boats the man may be; and if there be a difference in the sizes, and resistances, there will be a corresponding difference in the velocities, the smaller boat moving the fastest.

John F. Woodhull - 1910
There is a large demand for some means of producing heat in small amounts for heating and for cooking purposes. In the small city apartment, in the large country home, in the summer camp, in fact, wherever one lives, there is at times use for a small portable stove.

John F. Woodhull - 1910
Problems to be solved by the pupils, mostly by experiments at home or in the laboratory. 1. May we determine the age of an egg by its specific gravity? Procure an egg laid within 24 hours. Write its date upon it and place a number upon it to designate it. Attach a thread to its large end by a little sealing wax. (If you cannot think why it should be attached to the large end rather than the small end, try it attached to the small end and continue with it so until you get an answer to the question.)

John F. Woodhull - 1910
This experiment, as a group exercise, is useful in connection with class work on lighting devices as we find them in modern houses. While the apparatus seems rather expensive, it can often be borrowed, and has the advantage of bringing the class in contact with some commercial devices as actually used, as well as raising the question of cost.

John F. Woodhull - 1910
I have come to the conclusions set forth in this paper as the result of rather more than twenty years’ experience in teaching chemistry in one high school in a New England city of moderate size. It seems to me that experiences so confined to one locality and class of pupils can lead to conclusions of no great general value; on the other hand, the frank setting forth of the results of experiences in many localities by many teachers, may lead to much good, and it is only with the hope that this contribution may be one drop in the bucket of general experience that I offer it.

John F. Woodhull - 1910
The principle of mechanical efficiency is commonly studied in the laboratory by the use of the inclined plane. Although this experiment is simple, it is extremely difficult to prevent the pupils from confusing the idea of mechanical advantage with mechanical efficiency, especially if the former experiment Immediately precedes the latter.

John F. Woodhull - 1910
“All progress is history and biography.” This article is a bit of the intimate personal history of one school—a school which, if our critics may be believed, has had fair success in maintaining educational ideals and achieving practical success at the same time. It tells of a changing point of view, and a gradual growth toward a more nearly satisfactory solution of the problem of first-year science.

John F. Woodhull - 1910
Experiment XI. Object. To find a third gas in air and to study it,—carbon dioxide. Apparatus and Chemicals. Eight-inch test-tube, two-holed rubber stopper, two pieces of glass tubing, lime water, two bottles of oxygen gas from gas holder, charcoal, magnesium ribbon, combustion cup, forceps.

John F. Woodhull - 1910
The purpose of this series of experiments is to determine the relative economic values of ethyl alcohol, denatured alcohol and wood alcohol when burned as fuel in the fount of the chafing-dish under the usual conditions of use.

John F. Woodhull - 1910
There is a large demand for some means of producing heat in small amounts for heating and for cooking purposes. In the small city apartment, in the large country home, in the summer camp, in fact, wherever one lives, there is at times use for a small portable stove. In early fall and late spring when the winter furnace is not running, the small stove is used to take the chill from the air. In winter it may serve to give auxiliary heat in extremely cold weather.

John F. Woodhull - 1910
When water warmed over a stove reaches the boiling temperature, it is found to keep at that temperature. No matter how much heat be applied the temperature is not raised. When a substance is cooked by boiling in water, after the boiling temperature is reached, additional heat need be supplied only to replace heat lost to the air or wasted in vaporizing water. The substance is warm enough to cook and if loss of heat already in the substance is prevented, cooking will go on and no more fuel need be burned.

John F. Woodhull - 1910
Given a class all the members of which are the same age, all having taken the same previous studies, all having the same standing, and all good in mathematics, they will still be found to be widely different in their capacity to understand physics. The difference among them, lies not in their mental calibre, but in the experiences they may have had, or rather in the attention they may have paid to their experiences.

John F. Woodhull - 1910
The telephone as such has no place in the equipment of a physical laboratory, but if it is used as a means to an end rather than the end itself it can be made to be of great pedagogical value, for there is possibly no single instrument that involves the application of so many different physical principles as does the telephone. The several parts of the telephone can be obtained at a small expense from the manufacturers of commercial instruments, and if the means at the disposal of the teacher will allow it, several pieces of each part should be obtained that two or more stations may be established.

John F. Woodhull - 1910
1. Source. Goats, sheep, cattle. Commercial product in the United States is only from cattle. Requirements of the Board of Health (New York City): Stables must afford at least 600 cubic feet of space for each cow. Must have at least two square feet of window for each 600 cubic feet of space. Milk from diseased cows must not be used....

John F. Woodhull - 1904
The Horace Mann School was founded as a necessary adjunct of Teachers College, and both opened their doors (which were one and the same door, at 9 University Place) for the first reception of students on September 12, 1887. They were housed in the old building of the Union Theological Seminary and here they remained for seven years until, in 1894, they removed to Morningside Heights.

John F. Woodhull - 1902
If the phrase, “A self-respecting course in physics or chemistry,” means on adapted only to the few, the courses herein described are not intended to come in that category. We believe that physical science should be so taught in the high school that all pupils can pursue it with pleasure and profit. It should be something more than measurement and something more than mathematics, pure and applied.

John F. Woodhull - 1902
First year of the high-school course. Pupils about fourteen years of age. One year of thirty-two weeks. Two exercise of forty minutes each and one exercise of eighty-five minutes weekly, with two hours of home study, making four hours and forty-five minutes each week.

John F. Woodhull - 1902
An essential feature of our work in physics and chemistry is the pursuit of these subjects outside of the lecture, the recitation and the laboratory into the daily life. For this purpose we attempt so far as practicable excursions. In New York City, high-school pupils have so many home engagements that it is not possible to get a large portion of any class to go on excursions out of school hours, and it is not possible to take them away from the building on excursions during the school hours, because of their engagements with the other teachers.

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Abbot, Julia W.
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Abbott, Dorothy
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Achenbach, Thomas M.
Achilles, Charles M.
Achinstein, Betty
Achner, M. J.
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Ackerman, John M.
Ackerman, Phillip L.
Ackerman, Winona B.
Acosta, Elda
Acosta, Melanie M.
Acosta, Rudy
Acosta , Vasthi Reyes
Acuff, Bette
Ada, Alma Flor
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Adam, Roy
Adamany, David
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Adams, Kenneth R.
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Adamson, Susan C.
Adelson, Joseph
Adely, Fida J.
Adeyemo, Adeoye O.
Adigun, Olajumoke "Beulah"
Adkins, Amee
Adkins, Dorothy C.
Adkins, Winthrop D.
Adkison, Judith
Adler, Chaim
Adler, Karlyn
Adler, Mortimer J.
Adler, Susan Matoba
Ado, Kathryn
af Malmborg, Nils M.
Afonso, Robert
Afzal, Saima
Agans, Jennifer P.
Agee, Jane
Agirdag, Orhan
Agius, Kirsten
Agne, Russell M.
Agnew, Walter D.
Agosto, Vonzell
Agre, Gene P.
Agren, Raymond
Aguiar, Jeff
Aguilar, Jose V.
Aguilera-Black Bear, Dorothy
Aguirre, Julia
Aguirre Jr, Adalberto
Ahearn, Amy
Ahern, T. James
Ahern, Terence
Ahlberg, Mauri
Ahlstrom, Winton M.
Ahmad, Iftikhar
Ahmad, Nabeel
Ahn, June
Ahram, Roey
Ahrens, Maurice R.
Aiken, Henry David
Aiken-Wisniewski, Sharon A
Aikin, Wilford M.
Aikins, Ross
Airasian, Peter W.
Airton, Lee
Aitchison, Alison E.
Aitchison, Gertrude M.
Aitken, Graeme
Aitken, Jenny
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aka Don Trent Jacobs, Four Arrows
Akanbi , Linda
Akers, Milton E.
Akerson, Valarie L.
Akiba, Daisuke
Akiba, Motoko
Akin, Clayton
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Aldrich, Grace L.
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Alexander, Dameon V.
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Alexander, Herbert B.
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Alexander, Karl L.
Alexander, Leslie
Alexander, Nathan N.
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Alexander, Nicola A.
Alexander, Patricia A.
Alexander, Theron
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Alexander, W. P.
Alexander, William M.
Alexander, M.D., Franz
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Alford, Harold D.
Alford, Schevaletta M.
Alfred, Mary
Alger, Chadwick F.
Alharthi, Ahmad A.
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Allen-Jones , Glenda L.
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Almy, Millie
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