Back to the Homepage


Photo Gallery of the exhibits

Interactive exhibits of physical objects are the most effective way to communicate the ancient technologies.

In fact, I believe that in order to learn it is appropriate to manipulate physical objects and not just abstract renderings on the screen.

Areas covered include: computing before the digital age, communication before the Internet, and navigation before GPS.


Slide rules and mechanical calculators

The objective is to teach responsible use of new technologies and computerization, to prevent mental dependency that can have significant impacts on social life. Precisely:

  • arouse curiosity about slide rule and mechanical calculators;
  • illustrate their history and use;
  • demonstrate the need to use computers critically.

Cagliari Festivalscienza 2010, people interested

Somebody write notes

Cagliari Festivalscienza 2010, crowd

Crowd

Cagliari Festivalscienza 2011, the nomographs

Nomographs helps the boys to understand logarithms

Cagliari Festivalscienza 2011, youngster at work

Youngs learn at the fly

Slide rules at Cagliari Festivalscienza 2012

Teaching to the teachers

Nicola Marras: teaching slide rule and nomography

Lesson of nomography to children

The pascaline calculator

Practice with pascaline


Telegraphy and communication

The culture of instant information sharing was born in the 1800s. Back then, news and stock trade transactions traveled in real time over 650,000 km of telegraph network.

In the last century you could chat online by means of Ham radio, a network entirely built by devoted hobbyists.

Now we are always connected, but these systems may fail and only the Ham network can provide emergency communication.

Re-discovering these technologies, we should ask ourselves: how our present world will be viewed in the future?

Cagliari Festival Scienza 2017, people interested

People interested

Cagliari Festival Scienza 2017, Civil Defence

Volunteers of the Civil Defence

Cagliari FestivalScienza 2018, interview

Interview for local TV

Cagliari FestivalScienza 2018, Radiguet telegraph

Very rare Radiguet pre-Morse telegraphs

Cagliari FestivalScienza 2018, telegraph equipment

Telegraphic equipment

Cagliari FestivalScienza 2018, many students

Many students

Cagliari FestivalScienza, the transmitter of IS1EHM

The radio of IS1EHM, the first Italian female radio amateur

Cagliari FestivalScienza 2018, telegraph station

Postal telegraph station


Traditional navigation

The development of cartography and nautical instruments favored the cultural exchanges. Without the knowledge of the territory and the methods to visit it, there is no civilization and trade.

The technologies have evolved, but the principles remain the same, now used by space probes. We have no GPS signal outside the earth.

How did the Ulysses, Columbus and Apollo astronauts find the route? Let's rediscover these systems, on the basis unchanged for centuries: the satellite navigator exists only since 1990.

Cagliari FestivalScienza 2018, astronomical navigation

2018, presentation of the navigation exhibit


Science on Stage

Every two years SonS organizes Europe's biggest science teaching festival, where teachers from all over Europe exchange their projects. Participants are chosen through national events and their proposal reaches ca 100,000 teachers in 26 European countries and Canada.

My project on the old calculators won twice the Italian competition, being then represented in 2013 in Slubice (Poland), in 2015 in London and in 2016 again in Poland for the National Event.

Poster Science on Stage 2015

My program for Science on Stage

Poland, Slubice, SONS 2013, Nicola Marras stand

Science on Stage Poland, Slubice, 2013: the stand

London SONS 2015: Nicola Marras' stand

Science on Stage London 2015: the stand

Science on Stage 2015, teachers from all the world

Science on Stage London 2015: teachers from all the world

Science on Stage 2016, Nicola Marras' stand

Poland, Science on Stage at Poznań, 2016: the stand


Various events

Dangerous Sliding: la fine del regolo calcolatore

The latest slide rules

Download Too Weak to Survive

Reconstruction of an electrical analog calculator

Florence Sixteenth Century

Torpedo Computers in WWII

Technium

Marionettes


Science on Stage Italy  Cagliari FestivalScienza  Science on Stage Europe


© 2008 - 2026 Nicola Marras Manfredi - IS1EH


Top      Nicola Marras mail address     Homepage