OpenLLM-France/wikimedia huggingface dataset:
# Bloom Clock/Keys/Global/Temperate/Early Fall/White Flowers/DPL

This page is used to help create a key.
* BCP/Asteromoea mongolica
* BCP/Geranium sanguineum
* BCP/Capsicum annuum
* BCP/Angelonia angustifolia
* BCP/Nepeta cataria
* BCP/Hibiscus moscheutos
* BCP/Hibiscus trionum
* BCP/Petroselinum crispum
* BCP/Lycopus virginicus
* BCP/Heuchera americana
* BCP/Clematis virginiana
* BCP/Galinsoga parviflora
* BCP/Echinacea purpurea
* BCP/Cleome hassleriana
* BCP/Salvia leucantha
* BCP/Corydalis ochroleuca
* BCP/Digitaria
* BCP/Eupatorium rugosum
* BCP/Hibiscus syriacus
* BCP/Circaea lutetiana
* BCP/Cuscuta gronovii
* BCP/Lythrum salicaria
* BCP/Petunia x hybrida
* BCP/Aster divaricatus
* BCP/Lonicera japonica
* BCP/Clethra alnifolia
* BCP/Persicaria virginiana
* BCP/Platycodon grandiflorus
* BCP/Polygonum sagittatum
* BCP/Galium aristatum
* BCP/Aster ericoides
* BCP/Anthemis nobilis
* BCP/Persicaria maculosa
* BCP/Polygonum arifolium
* BCP/Mentha suaveolens
* BCP/Clematis terniflora
* BCP/Impatiens walleriana
* BCP/Buddleja davidii
* BCP/Salvia nemorosa
* BCP/Ocimum basilicum
* BCP/Fallopia japonica
* BCP/Pycnanthemum tenuifolium
* BCP/Clematis
* BCP/Prunus laurocerasus
* BCP/Lobelia siphilitica
* BCP/Euphorbia maculata
* BCP/Pycnanthemum incanum
* BCP/Aster lateriflorus
* BCP/Lathyrus odoratus
* BCP/Fagopyrum esculentum
* BCP/Persicaria polymorpha
* BCP/Conyza canadensis
* BCP/Zinnia violacea
* BCP/Tanacetum parthenium
* BCP/Torenia fournieri
* BCP/Solanum carolinense
* BCP/Anemone x hybrida
* BCP/Agastache foeniculum
* BCP/Nipponanthemum nipponicum
* BCP/Phlox paniculata
* BCP/Datura stramonium
* BCP/Mollugo verticillata
* BCP/Nicotiana sylvestris
* BCP/Cichorium intybus
* BCP/Melissa officinalis
* BCP/Abelia x grandiflora
* BCP/Vinca minor
* BCP/Saponaria officinalis
* BCP/Hesperis matronalis
* BCP/Daucus carota
* BCP/Eupatorium perfoliatum
* BCP/Achillea millefolium
* BCP/Aster novae-angliae
* BCP/Lobularia maritima
* BCP/Trifolium repens
* BCP/Viola tricolor
* BCP/Viola x wittrockiana
* BCP/Phytolacca americana
* BCP/Plantago lanceolata
* BCP/Achillea sibirica
* BCP/Hemerocallis
* BCP/Salvia guaranitica
* BCP/Lagerstroemia indica
* BCP/Dahlia
* BCP/Melilotus alba
* BCP/Gaultheria procumbens
* BCP/Chelone glabra
* BCP/Solanum americanum
* BCP/Fragaria vesca
* BCP/Matricaria recutita
* BCP/Prunus
* BCP/Viola
* BCP/Dianthus
* BCP/Silene latifolia
* BCP/Malva neglecta
# Bloom Clock/Keys/Global/Temperate/Early Spring/All/DPL

This is a DPL-generated list, used to create the "all plants" key for Early Spring
* BCP/Erythronium americanum
* BCP/Helleborus x hybridus
* BCP/Muscari armeniacum
* BCP/Crocus vernus
* BCP/Veronica arvensis
* BCP/Lamium purpureum
* BCP/Alnus rugosa
* BCP/Salix discolor
* BCP/Jasminum nudiflorum
* BCP/Magnolia stellata
* BCP/Crocus tommasinianus
* BCP/Taxus baccata
* BCP/Scilla siberica
* BCP/Forsythia x intermedia
* BCP/Veronica persica
* BCP/Cardamine hirsuta
* BCP/Helleborus foetidus
* BCP/Corylus avellana
* BCP/Pieris japonica
* BCP/Magnolia x soulangeana
* BCP/Senecio vulgaris
* BCP/Helleborus niger
* BCP/Vinca minor
* BCP/Taraxacum officinale
* BCP/Ficaria verna
* BCP/Corylopsis spicata
* BCP/Narcissus
* BCP/Galanthus nivalis
* BCP/Hamamelis x intermedia
* BCP/Symplocarpus foetidus
* BCP/Stellaria media
* BCP/Acer saccharum
* BCP/Cornus mas
* BCP/Acer rubrum
* BCP/Corydalis cheilanthifolia
* BCP/Viola x wittrockiana
* BCP/Rhododendron
* BCP/Spiraea thunbergii
* BCP/Erica carnea
* BCP/Eranthis hyemalis
* BCP/Cornus officinalis
* BCP/Hamamelis 'Jelena'
* BCP/Hamamelis 'Arnold Promise'
* BCP/Hamamelis 'Diane'
* BCP/Hamamelis 'Sunburst'
* BCP/Crocus
* BCP/Parrotia persica
* BCP/Mahonia bealei
* BCP/Salix gracilistyla 'Melanostachys'
* BCP/Muscari
* BCP/Acer saccharinum
* BCP/Salix
* BCP/Prunus
* BCP/Viola
* BCP/Magnolia
* BCP/Corylus avellana 'contorta'
* BCP/Erythronium americanum
* BCP/Helleborus x hybridus
* BCP/Muscari armeniacum
* BCP/Crocus vernus
* BCP/Veronica arvensis
* BCP/Lamium purpureum
* BCP/Alnus rugosa
* BCP/Salix discolor
* BCP/Jasminum nudiflorum
* BCP/Magnolia stellata
* BCP/Crocus tommasinianus
* BCP/Taxus baccata
* BCP/Scilla siberica
* BCP/Forsythia x intermedia
* BCP/Veronica persica
* BCP/Cardamine hirsuta
* BCP/Helleborus foetidus
* BCP/Corylus avellana
* BCP/Pieris japonica
* BCP/Magnolia x soulangeana
* BCP/Senecio vulgaris
* BCP/Helleborus niger
* BCP/Vinca minor
* BCP/Taraxacum officinale
* BCP/Ficaria verna
* BCP/Corylopsis spicata
* BCP/Narcissus
* BCP/Galanthus nivalis
* BCP/Hamamelis x intermedia
* BCP/Symplocarpus foetidus
* BCP/Stellaria media
* BCP/Acer saccharum
* BCP/Cornus mas
* BCP/Acer rubrum
* BCP/Corydalis cheilanthifolia
* BCP/Viola x wittrockiana
* BCP/Rhododendron
* BCP/Spiraea thunbergii
* BCP/Erica carnea
* BCP/Eranthis hyemalis
* BCP/Cornus officinalis
* BCP/Hamamelis 'Jelena'
* BCP/Hamamelis 'Arnold Promise'
* BCP/Hamamelis 'Diane'
* BCP/Hamamelis 'Sunburst'
* BCP/Crocus
* BCP/Parrotia persica
* BCP/Mahonia bealei
* BCP/Salix gracilistyla 'Melanostachys'
* BCP/Muscari
* BCP/Acer saccharinum
* BCP/Salix
* BCP/Prunus
* BCP/Viola
* BCP/Magnolia
* BCP/Corylus avellana 'contorta'
# Bloom Clock/Keys/Global/Temperate/Early Fall/Red Flowers/DPL

This page is used to help create a key.
* BCP/Hibiscus moscheutos
* BCP/Phlox paniculata
* BCP/Lonicera sempervirens
* BCP/Petunia x hybrida
* BCP/Rosa 'Knockout'
* BCP/Zinnia violacea
* BCP/Lonicera x heckrottii
* BCP/Impatiens walleriana
* BCP/Tagetes patula
* BCP/Celosia argentea
* BCP/Hibiscus syriacus
* BCP/Salvia splendens
* BCP/Salvia vanhouttei
* BCP/Clematis
* BCP/Vinca minor
* BCP/Hesperis matronalis
* BCP/Viola tricolor
* BCP/Viola x wittrockiana
* BCP/Lagerstroemia indica
* BCP/Lobelia cardinalis
* BCP/Hemerocallis
* BCP/Dahlia
* BCP/Prunus
* BCP/Viola
* BCP/Dianthus
# Bloom Clock/Keys/Global/Temperate/Early Fall/Yellow Flowers/DPL

This page is used to help create a key.
* BCP/Amaranthus blitoides
* BCP/Digitalis grandiflora
* BCP/Hibiscus trionum
* BCP/Spilanthes oleracea
* BCP/Sedum kamtschaticum
* BCP/Celosia argentea
* BCP/Oxalis corniculata
* BCP/Bidens frondosa
* BCP/Lactuca canadensis
* BCP/Euthamia graminifolia
* BCP/Coreopsis verticillata
* BCP/Agrimonia
* BCP/Alchemilla mollis
* BCP/Sicyos angulatus
* BCP/Artemisia vulgaris
* BCP/Corydalis lutea
* BCP/Amaranthus retroflexus
* BCP/Cucurbita pepo
* BCP/Lonicera japonica
* BCP/Artemisia annua
* BCP/Duchesnea indica
* BCP/Solidago
* BCP/Tagetes erecta
* BCP/Zinnia violacea
* BCP/Rudbeckia fulgida
* BCP/Helianthus x laetiflorus
* BCP/Rorippa sylvestris
* BCP/Miscanthus sinensis
* BCP/Torenia fournieri
* BCP/Ambrosia artemisiifolia
* BCP/Helianthus annuus
* BCP/Lycopersicon
* BCP/Helenium autumnale
* BCP/Ambrosia trifida
* BCP/Erechtites hieracifolia
* BCP/Helianthus tuberosus
* BCP/Rudbeckia triloba
* BCP/Rudbeckia hirta
* BCP/Portulaca oleracea
* BCP/Rudbeckia laciniata
* BCP/Tagetes patula
* BCP/Oxalis stricta
* BCP/Chelidonium majus
* BCP/Taraxacum officinale
* BCP/Hypericum perforatum
* BCP/Viola tricolor
* BCP/Impatiens capensis
* BCP/Viola x wittrockiana
* BCP/Hemerocallis
* BCP/Oenothera
* BCP/Dahlia
* BCP/Solidago canadensis
* BCP/Tanacetum vulgare
* BCP/Acalypha rhomboidea
* BCP/Pilea pumila
* BCP/Kirengeshoma palmata
* BCP/Viola
* BCP/Oenothera biennis
# Bloom Clock/Keys/Southeastern Pennsylvania/April
## April

Season: Mid Spring, (with a high correlation of 100%) (currently keyed as such)
(If a plant you are trying to identify does not appear on the key(s) below, you may be able to find it on the corresponding global-temperate key linked above)
* All Flowers blooming in April (132)
** White flowers (52)
** Pink flowers (37)
** Red flowers (13)
** Orange flowers (8)
** Yellow flowers (49)
** Green flowers (13)
** Blue flowers (17)
** Purple flowers (28)
** Brown flowers (5)
** Black flowers (4)
# Bloom Clock/Keys/Southeastern Pennsylvania/April/Brown Flowers

This page is part of a dichotomous key for plants recorded as blooming in Southeastern Pennsylvania during the month of April. These plants have the following traits:
   * Brown flowers
Asarum europaeum
| Flower and emerging leaves Wikipedia • Commons • Wikibooks (horticulture) • Wikibooks (subject) • Wikispecies • Fruit and seed clock | Profile for Asarum europaeum (European Wild Ginger) Identifying Characteristics Recent Logs --SB_Johnny | 17:26, 9 June 2007 (UTC) --SB_Johnny | 10:28, 14 April 2008 (UTC) --SB_Johnny | 10:18, 27 April 2008 (UTC) (view all logs) |
Global data: Temperate zone season(s): Mid Spring, Early Summer
Arisaema triphyllum
| flower and foliage Wikipedia • Commons • Wikibooks (horticulture) • Wikibooks (subject) • Wikispecies • Fruit and seed clock | Profile for Arisaema triphyllum (Jack-in-the-Pulpit) Identifying Characteristics Recent Logs --SB_Johnny | 9 May 2007 (from photographs) --SB_Johnny | 13:13, 26 April 2008 (UTC) --SB_Johnny | 11:38, 4 May 2008 (UTC) --SB_Johnny | 09:40, 17 May 2008 (UTC) --SB_Johnny | 09:04, 27 May 2008 (UTC) --SB_Johnny | 14:43, 1 June 2008 (UTC) (view all logs) |
Global data: Temperate zone season(s): Mid Spring, Late Spring, Early Summer
Viola
| Viola cornuta, a species of Viola Wikipedia • Commons • Wikibooks (horticulture) • Wikibooks (subject) • Wikispecies • Fruit and seed clock | Profile for Viola (Violet) Identifying Characteristics Subclass plants:V. labradorica, V. pedata, V. tricolor, V. x wittrockiana Recent Logs Trinity507 03:48, 4 May 2010 (UTC) (view all logs) |
Global data: Temperate zone season(s): Mid Spring, Late Spring, Early Summer, Mid Summer, Early Fall, Mid Fall, Late Fall, Early Winter
Symplocarpus foetidus
| Spathe Wikipedia • Commons • Wikibooks (horticulture) • Wikibooks (subject) • Wikispecies • Fruit and seed clock | Profile for Symplocarpus foetidus (Eastern Skunk Cabbage) Identifying Characteristics Habit:Colonizing herbaceous plantFlowers:spathe and spadixFoliage:basal, very largeScent:strong unpleasant odor from all partsLife Cycle: perennial Recent Logs Sb f 16:21, 11 February 2009 (UTC) (view all logs) |
Global data: Temperate zone season(s): Mid Winter, Late Winter, Early Spring, Mid Spring
Viola x wittrockiana
| A Purple-flowered variety Wikipedia • Commons • Wikibooks (horticulture) • Wikibooks (subject) • Wikispecies • Fruit and seed clock | Profile for Viola x wittrockiana (Pansy) Identifying Characteristics Habit:Short-lived, low-growing perennial, with mostly cool season bloomsHigher taxa:Viola Recent Logs --Anna reg 12:12, 12 April 2010 (UTC) Anna reg 12:01, 27 March 2011 (UTC) Anna reg 16:35, 2 May 2011 (UTC) (view all logs) |
Global data: Temperate zone season(s): Early Spring, Mid Spring, Mid Summer, Early Fall, Mid Fall, Late Fall, Early Winter
# Bloom Clock/Keys/Southeastern Pennsylvania/April/Black Flowers

This page is part of a dichotomous key for plants recorded as blooming in Southeastern Pennsylvania during the month of April. These plants have the following traits:
   * Black flowers
Fraxinus pennsylvanica
| fruits Wikipedia • Commons • Wikibooks (horticulture) • Wikibooks (subject) • Wikispecies • Fruit and seed clock | Profile for Fraxinus pennsylvanica (Green Ash) Identifying Characteristics Habit:Large tree Recent Logs --SB_Johnny | 08:46, 18 April 2008 (UTC) --SB_Johnny | 10:27, 27 April 2008 (UTC) (view all logs) |
Global data: Temperate zone season(s): Mid Spring
Viola
| Viola cornuta, a species of Viola Wikipedia • Commons • Wikibooks (horticulture) • Wikibooks (subject) • Wikispecies • Fruit and seed clock | Profile for Viola (Violet) Identifying Characteristics Subclass plants:V. labradorica, V. pedata, V. tricolor, V. x wittrockiana Recent Logs Trinity507 03:48, 4 May 2010 (UTC) (view all logs) |
Global data: Temperate zone season(s): Mid Spring, Late Spring, Early Summer, Mid Summer, Early Fall, Mid Fall, Late Fall, Early Winter
Helleborus x hybridus
| Red flowers (flowers range from whie through purple) Wikipedia • Commons • Wikibooks (horticulture) • Wikibooks (subject) • Wikispecies • Fruit and seed clock | Profile for Helleborus x hybridus (Hybrid Hellebore) Identifying Characteristics Habit:Low herbaceous plantFoliage:Primarily basal, palmately lobed, evergreenFruit:Dry capsulesLife Cycle: Perennial Recent Logs Anna reg 18:41, 24 March 2011 (UTC) SB Johnny-LM 10:59, 4 April 2008 (UTC) --SB_Johnny | 19:13, 13 April 2008 (UTC) SB Johnny-LM 00:24, 17 April 2008 (UTC) (view all logs) |
Global data: Temperate zone season(s): Mid Winter, Early Spring, Mid Spring
Viola x wittrockiana
| A Purple-flowered variety Wikipedia • Commons • Wikibooks (horticulture) • Wikibooks (subject) • Wikispecies • Fruit and seed clock | Profile for Viola x wittrockiana (Pansy) Identifying Characteristics Habit:Short-lived, low-growing perennial, with mostly cool season bloomsHigher taxa:Viola Recent Logs --Anna reg 12:12, 12 April 2010 (UTC) Anna reg 12:01, 27 March 2011 (UTC) Anna reg 16:35, 2 May 2011 (UTC) (view all logs) |
Global data: Temperate zone season(s): Early Spring, Mid Spring, Mid Summer, Early Fall, Mid Fall, Late Fall, Early Winter
# Bloom Clock/Keys/Southeastern Pennsylvania/April/Black Flowers/DPL

This is a DPL-generated list, used to create the key for Black-flowered plants Southeastern Pennsylvania in April
* BCP/Helleborus x hybridus
* BCP/Fraxinus pennsylvanica
* BCP/Aquilegia x hybrida
* BCP/Viola x wittrockiana
* BCP/Viola
* BCP/Helleborus x hybridus
* BCP/Fraxinus pennsylvanica
* BCP/Aquilegia x hybrida
* BCP/Viola x wittrockiana
* BCP/Viola
# Bloom Clock/Keys/Southeastern Pennsylvania/April/Blue Flowers/DPL

This is a DPL-generated list, used to create the key for Blue-flowered plants Southeastern Pennsylvania in April
* BCP/Brunnera macrophylla
* BCP/Geranium
* BCP/Nepeta x faassenii
* BCP/Veronica arvensis
* BCP/Scilla siberica
* BCP/Muscari armeniacum
* BCP/Veronica persica
* BCP/Chionodoxa
* BCP/Vinca sardoa
* BCP/Geranium maculatum
* BCP/Pulmonaria
* BCP/Viola pedata
* BCP/Vinca minor
* BCP/Glechoma hederacea
* BCP/Viola x wittrockiana
* BCP/Veronica peduncularis
* BCP/Mazus reptans
* BCP/Lamium
* BCP/Muscari
* BCP/Hyacinthus orientalis
* BCP/Houstonia caerulea
* BCP/Viola
* BCP/Ajuga reptans 'valfredda'
* BCP/Brunnera macrophylla 'Variegata'
* BCP/Brunnera macrophylla
* BCP/Geranium
* BCP/Nepeta x faassenii
* BCP/Veronica arvensis
* BCP/Scilla siberica
* BCP/Muscari armeniacum
* BCP/Veronica persica
* BCP/Chionodoxa
* BCP/Vinca sardoa
* BCP/Geranium maculatum
* BCP/Pulmonaria
* BCP/Viola pedata
* BCP/Vinca minor
* BCP/Glechoma hederacea
* BCP/Viola x wittrockiana
* BCP/Veronica peduncularis
* BCP/Mazus reptans
* BCP/Lamium
* BCP/Muscari
* BCP/Hyacinthus orientalis
* BCP/Houstonia caerulea
* BCP/Viola
* BCP/Ajuga reptans 'valfredda'
* BCP/Brunnera macrophylla 'Variegata'
# Bloom Clock/Keys/Southeastern Pennsylvania/April/Brown Flowers/DPL

This is a DPL-generated list, used to create the key for Brown-flowered plants Southeastern Pennsylvania in April
* BCP/Asarum europaeum
* BCP/Arisaema triphyllum
* BCP/Corylus americana
* BCP/Helleborus x hybridus
* BCP/Symplocarpus foetidus
* BCP/Viola x wittrockiana
* BCP/Muscari
* BCP/Viola
* BCP/Asarum europaeum
* BCP/Arisaema triphyllum
* BCP/Corylus americana
* BCP/Helleborus x hybridus
* BCP/Symplocarpus foetidus
* BCP/Viola x wittrockiana
* BCP/Muscari
* BCP/Viola
# Energy phantoms/Quiz

Energy phantoms/Lecture is a lecture from the radiation astronomy department on the fundamentals of observational information.
This is a quiz based on the lecture that you are free to take at any time.
To improve your score, read and study the lecture, the links contained within, listed under See also, External links, and in the {{radiation astronomy resources}} or {{charge ontology}} templates. This should give you adequate background to get 100 %.
As a "learning by doing" resource, this quiz helps you to assess your knowledge and understanding of the information, and it is a quiz you may take over and over as a learning resource to improve your knowledge, understanding, test-taking skills, and your score.
Suggestion: Have the lecture available in a separate window.
To master the information and use only your memory while taking the quiz, try rewriting the information from more familiar points of view, or be creative with association.
Enjoy learning by doing!

## Hypotheses

* Timing can be applied to changes in distance.
# Energy stored by a capacitor

The energy (measured in Joules) stored in a capacitor is equal to the work done to charge it. Consider a capacitance C, holding a charge +q on one plate and -q on the other. Moving a small element of charge $\mathrm {d} q$ from one plate to the other against the potential difference V = q/C requires the work $\mathrm {d} W$:
    $\mathrm {d} W={\frac {q}{C}}\,\mathrm {d} q$
where
    W is the work measured in joules
    q is the charge measured in coulombs
    C is the capacitance, measured in farads
We can find the energy stored in a capacitance by integrating this equation. Starting with an uncharged capacitance (q=0) and moving charge from one plate to the other until the plates have charge +Q and -Q requires the work W:
    $W_{charging}=\int _{0}^{Q}{\frac {q}{C}}\,\mathrm {d} q={\frac {1}{2}}{\frac {Q^{2}}{C}}={\frac {1}{2}}CV^{2}=W_{stored}$
Combining this with the above equation for the capacitance of a flat-plate capacitor, we get:
    $W_{stored}={\frac {1}{2}}CV^{2}={\frac {1}{2}}\epsilon {\frac {A}{d}}V^{2}$ .
where
    W is the energy measured in joules
    C is the capacitance, measured in farads
    V is the voltage measured in volts
# Enes100/Attendance

This is designed for a person working on a project for 4 weeks as part of a 3 credit class. Please copy this form to your user page. Then delete everything in italics when filling out this form.

## Week0 Activities
### Write problem/project Goal

find an easy way of taking attendance using facial recognition software

### My First Task

What are you going to do for the team this first weekend?

## Week1 Activities
### Summary of actual work over first weekend

How is what you did different than what you planned?

### Week1 Narrative

Tell a detailed story describing what you did for your team over the weekend.

### My Second Task

Record what you are planning on doing for the team during the second weekend.

## Week2 Activities
### Summary of actual work over second weekend

How is what you did different than what you planned?

### Week2 Narrative

Tell a detailed story describing what you did for your team over the weekend.

### My Third task

Record what you are planning on doing for the team during the third weekend.

## Week3 Activities
### Summary of actual work over third weekend

How is what you did different than what you planned?

### Week3 Narrative

Tell a detailed story describing what you did for your team over the weekend.

### My Fourth task

Record what you are planning on doing for the team during the final weekend of project work.

## Week4 Activities
### Summary of actual work over fourth weekend

How is what you did different than what you planned?

### Week4 Narrative

Tell a detailed story describing what you did for your team over the weekend.

### Complete Team Page

Fill out the Team Form (should have already copied the form, created the team page, linked to it and started filling it out).
# Energy stored by an inductor
## Properties of inductance

The equation relating inductance and flux linkages can be rearranged as follows:
    $\Phi =Li\,$
Taking the time derivative of both sides of the equation yields:
    ${\frac {d\Phi }{dt}}=L{\frac {di}{dt}}+i{\frac {dL}{dt}}\,$
In most physical cases, the inductance is constant with time and so
    ${\frac {d\Phi }{dt}}=L{\frac {di}{dt}}$
By Faraday's_law_of_induction of Induction we have:
    ${\frac {d\Phi }{dt}}=-{\mathcal {E}}=v$
where ${\mathcal {E}}$ is the Electromotive force (emf) and $v$ is the induced voltage. Note that the emf is opposite to the induced voltage. Thus:
    ${\frac {di}{dt}}={\frac {v}{L}}$
or
    $i(t)={\frac {1}{L}}\int _{0}^{t}v(\tau )d\tau +i(0)$
These equations together state that, for a steady applied voltage v, the current changes in a linear manner, at a rate proportional to the applied voltage, but inversely proportional to the inductance. Conversely, if the current through the inductor is changing at a constant rate, the induced voltage is constant.
The effect of inductance can be understood using a single loop of wire as an example. If a voltage is suddenly applied between the ends of the loop of wire, the current must change from zero to non-zero. However, a non-zero current induces a magnetic field by Ampère's law. This change in the magnetic field induces an emf that is in the opposite direction of the change in current. The strength of this emf is proportional to the change in current and the inductance. When these opposing forces are in balance, the result is a current that increases linearly with time where the rate of this change is determined by the applied voltage and the inductance.
Multiplying the equation for $di/dt$ above with $Li$ leads to
    $Li{\frac {di}{dt}}={\frac {d}{dt}}{\frac {L}{2}}i^{2}=iv$
Since iv is the energy transferred to the system per time it follows that
    $\left(L/2\right)i^{2}$
is the energy of the magnetic field generated by the current.
# Engine

* Please help develop and classify this resource
* Learn how you can develop this resource to teach participants about Engine. Choose a subject, education level, and resource type to classify the resource by. You may learn more about the topic to help you develop and classify the resource from:
Engines move the aircraft.
Jet Engine are usually on jets.

## Resources

* w:Engine
* w:Internal combustion engine
* w:Diesel engine