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Siemens Stiftung

Das menschliche Skelett

Grafik, beschriftet:Abbildung des menschlichen Skeletts.Knochen, Muskeln und Sehnen geben unserem Körper Halt und Form.

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Siemens Stiftung

Tuning fork as "simple" sound

Graphic:
Oscilloscope graph of a tuning fork tone as example of a simple tone with visible upper harmonics in the starting phase of oscillation.

Tuning forks as well produce simple periodic tones but, strictly speaking, they are not really pure as there are several upper harmonics already overlapped.

Information and ideas:
Possible cross reference: Examination of aperiodic speech signals with the help of spectral analysis.
Further information on this graphic is available as information sheet on the media portal of the Siemens Stiftung.

Relevant for teaching:
Sound/acoustics: parameters
Vibrations and waves

Medientypen

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Lernalter

11-18

Schlüsselwörter

Sound Wave (physics)

Sprachen

Englisch

Dieses Material ist Teil einer Sammlung

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Siemens Stiftung

Communication costs energy

Interactive graphic:
Overview of the annual energy requirement of communication with a smartphone

In modern communications, as with every form of communication, a message is sent from a transmitter via a channel to a receiver. A smartphone is used daily, to communicate, navigate via GPS, or call up information from the Web. In this context, the graphic shows devices and transmitters with their annual energy requirement in kilowatt-hours (kWh). Most users have little idea about the amounts of energy (particularly electric power) that are needed for this modern communications technology. Servers, for example, need energy for uninterrupted operation and for the required cooling of equipment.

Information and ideas:
This topic raises questions such as: How much energy is needed worldwide for mobile radio communications? What could this energy otherwise be used for?


Dieses Material ist Teil einer Sammlung

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Siemens Stiftung

Outer ear section

Graphic:
The most important parts of the outer ear with pinna, ear canal, hair follicles, ceruminous glands and eardrum.

The outer ear consists of the pinna and the ear canal. The ear canal ends at the eardrum.
In the membranous wall of the ear canal there are glands which produce cerumen (earwax). At the edge of the ear canal there are some small hairs, hair follicles, which serve as protection against foreign bodies.

Information and ideas:
Helpful to distinguish outer, middle and inner ear.
Can be used, for example in a worksheet, for work together in class with the digital projector, as overhead transparency.

Relevant for teaching:
The human body
Structure and function of a sensory organ
Functions of senses

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Siemens Stiftung

Inflammation of the middle ear

Labeled graphic:
Section of an ear shows the regions affected by middle ear inflammation.

In cases of inflammation of the middle ear (Otitis media) the mucous membrane of the tympanic cavity is inflamed.

Middle ear inflammation is usually caused by infections of the nasopharynx region which rise up into the tympanic cavity via the Eustachian tube.

Information and ideas:
This graphic is good for discussing possible complications (for example "mastoiditis?). The students should be made aware of how important it is to have these diseases properly treated and to make sure that they recover fully and properly.
Further information regarding inflammation of the middle ear in particular and diseases of the ear in general is available as information sheet on the media portal of the Siemens Stiftung.

Relevant for teaching:
Hearing defect/hearing impairment

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Siemens Stiftung

Hands over ears

Photo:
Child with its hands over its ears.

Information and ideas:
As illustration for the topic of noise exposure or for experiments on hearing.

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Siemens Stiftung

;: Child with cap

Photo:
The best protection against colds and consequently against inflammation of the middle ear is to wear a cap in the winter which covers the ears.

Acute inflammation of the middle ear is one of the most frequent illnesses that children get. Acute means it starts suddenly, is very severe but is usually over quickly as well. This kind of inflammation occurs more during the winter. Children who suffer from it usually had a cold before.
While acute middle ear inflammation is very painful, it usually heals up and is forgotten quickly provided it is treated and observed properly.

Information and ideas:
Use picture to introduce topic "Looking after the sensory organs" or the topic "Ear diseases".

Relevant for teaching:
Looking after the sensory organs
Personal health care

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Siemens Stiftung

Auditory path - brain parts hearing

Labeled graphic:
"Auditory pathway? describes route taken by auditory nerve impulses in and through the brain. But the hearing process is not over yet.

The auditory pathway is the nerve tract for the sensation of hearing.
People used to think that the senses were more localised. Now we know that apart from the auditory pathway, lots of other parts of the brain are involved, too - parts that are also used by the other senses. It is this that makes it possible for human intelligence to understand abstract concepts beyond the mere recognition of patterns. To be able to understand the complex facts of a complex sentence does, after all, involves more than recognizing the words together.

Information and ideas:
Further information regarding this graphic is available as information sheet on the media portal of the Siemens Stiftung.

Relevant for teaching:
Reception and processing of information
Perception, recognition, action

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Siemens Stiftung

Alkaline battery

Photo:
The alkaline battery is one of the most important electrochemical energy storage devices in everyday life. It is a galvanic cell consisting of a zinc anode, a manganese dioxide cathode, and potassium hydroxide solution as the electrolyte.


Information and ideas:
An example for the conversion of chemical energy into electrical energy.

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Siemens Stiftung

Abnormal audiometric audibility limit

Chart:
Audiometric audibility limit of a person with hearing impairment compared to an intact sense of hearing shows handicap in speech range.

The speech range is that range of frequency and loudness where speech communication usually takes place. Within the audiometric audibility limit it is the kidney-shaped range. In our chart it is coloured blue. When, for example, hair cells are damaged in the inner ear and no longer work, the audiometric audibility limit changes. The speech range is affected.

Information and ideas:
An attempt at comparing charts showing normal hearing and reduced hearing can be done by students individually - as homework. It is useful for testing written expression (English) as well as for testing basic skills from Mathematics or Physics (how to interpret a chart, for example).

Relevant for teaching:
Hearing defects/hearing impairment
How hearing functions
Sound/acoustics