Category Archives: Outreach

Celebrating the International Year of Periodic Table at 1st High School of Kaisariani

Just a little advertisement of an outreach event I have been preparing with my good old friend Yiota Manolidou, a physics teacher at the 1st High School of Kaisariani in Athens.

I will drop by, talk to the youngsters about the Periodic Table, explore the chemical elements in the nature and our universe, discuss cosmosynthesis and… play with plastic bricks and colored balls. The event wil be a pilot for more visits to schools planned throughout the year, that is celebrated by the United Nations as the “International Year of Periodic Table”. Visit their website at for more information.

Here is the logo I made

Physics of …

I have a tendency to collect things. All kinds of junk, material or immaterial.

Here is a collection I really like, a short compilation (to be updated frequently and appropriately) regarding the Physics of (something) where (something) can be a rocket, a chocolate or a superhero. Feel free to contribute your input in case not listed; I am sure there is a wealth of such info out there. Do not forget to include your link or source to provide credit (*)

Happy physics discoveries!

(196) Physics of…

You can submit your own “physics of…” links by sending me a note.

(*) Links and articles posted by @wired, @forbes, @PhysicsTweet and @BlackPhysicists @physorg are greatly acknowledged

Η μέρα του π / Pi Day

5 min before class and I have to post this else the day will sweep it through.

14 March (=3.14 in the US) is known as the π (3.14159) Day

To celebrate this very special day I am posting a Monte-Carlo method to calculate Pi.

Here is the link to the method a seen on

You can try the code yourself in javascript:

var demo = new Demo({
    ui: {
        addOne: {
            title: “Add points one-by-one”,
            type: “button”
        animate: {
            title: “Animate”,
            value: false,
        speed: {
            title: “Speed”,
            value: 1,
            range: [5, 100],
            resolution: 1,
            input: “hidden”,
        reset: {
            title: “Reset”,
            type: “button”
    animateID: null,
    totalPoints: 0,
    innerPoints: 0,
    radius: 250,
    init: function(){
            id: “my-canvas”,
            height: “500px”,
            width: “500px”,
            width: “100%”,
            “max-width”: “500px”,
            “max-height”: “500px”,
            “height”: “100%”,
            “margin”: “0 auto”,
            “display”: “block”,
            “border”: “solid 1px #CCC”
        this.scale = d3.scale.linear()
                    .domain([-1, 1])
                    .range([0, 500]);
        this.canvas = document.getElementById(“my-canvas”);
        this.context = this.canvas.getContext(“2d”);
        $(“#ui-container”).prepend(“<div class=’interface’ id=’js-points-data’></div>”);
        $(“#js-points-data”).append(“Total Number of points: <span class=’js-total-points’>0</span><br />”);
        $(“#js-points-data”).append(“Points within circle: <span class=’js-inner-points’>0</span><br />”);
        $(“#js-points-data”).append(“Pi estimation: <span class=’js-pi-estimation’></span><br />”);
    initCanvas: function(){
        this.context.strokeStyle = “#999”;
        this.context.arc(this.scale(0), this.scale(0), this.radius, 0, 2 * Math.PI);
    animate: function(){
        this.animateID = window.requestAnimationFrame(this.animate.bind(this));
    reset: function(){
        this.totalPoints = 0;
        this.innerPoints = 0;
    updateDisplay: function(){
        var piEstimate = (4 * this.innerPoints / this.totalPoints).toFixed(5);
        if (this.totalPoints == 0){
            piEstimate = “”;
    update: function(e){
        if (e == “speed”){
        } else if (e == “animate” && this.ui.animate.value == true) {
        } else if (e == “animate” && this.ui.animate.value == false) {
        } else if (e == “reset”) {
        } else {
            if (e == “addOne”){
                var numberToAdd = 1;
            } else {
                var numberToAdd = this.ui.speed.value;
            for (var i = 0 ; i < numberToAdd ; i++){
                var randomX = Math.random() * 2 – 1;
                var randomY = Math.random() * 2 – 1;
                if (Math.pow(this.scale(randomX) – this.scale(0), 2) + Math.pow(this.scale(randomY) – this.scale(0), 2) > Math.pow(this.radius, 2)){
                    this.context.fillStyle = “blue”;
                } else {
                    this.context.fillStyle = “red”;


Have a real Haπ Day!

Astropyli: 10 years

This is dissapointing: sitting on my balcony trying to locate some of the beautiful stars above that are simply not there! Photopollution has a cost. A little earlier I watched the moon setting hand in hand with Venus (and the weaker-lighted Jupiter behind) and it was just an amazing picture to enjoy. But stars? The Milky Way? Very hard despite the rather dark night due to Moon’s absence. It is not only my location of viewing the night sky, it is the unfair comparison with the beautiful sky I was lucky to observe a week ago in Ano Vrontou Serres during our Starry Night Event.

It has been already ten years a few guys and a telescope decided to organize the first event of Astropyli ( in Ano Vrontou, Serres. Ano Vrontou is a remote community at 1100 m of elevation far away from any strong sources of light at the foor of Mt Orvilos, exactly at the border with Bulgaria. Ano Vrontou was a very frequent place a century ago being a settlement on the path of trade caravans from the north down to Serres and Thessaloniki. Local economy flourished at the time, but after two wars and construction of modern roads, the location was left abandoned and slowly decayed. However, there is still a 300 people strong place and is very famous for the local produce, Vrontou potato, mainly due to the heavy soils and winter conditions.

Being 35 km away from the capital of the prefecture, Ano Vrontou is the ideal place to have a relaxing visit, breathe all the oxygen you might have missed in the large cities and enjoy great local food and wine spirits. But it is also a great place to set your telescope and enjoy the night sky. Ten years after, those first guys have multiplied and every year more and more people gather to listen to lectures from prominent scientists (mainly Professors of Astrophysics), observe stellar objects and take part in the satellitle events taking place in the days before and after the event (camping, hiking, ecotourism, astroschool of the kids and many more).

Astropyli has grown strong over the years. And passionate. And people dream of more and more things to plan, organize and build. A science park is in construction phase, a planetarium will be built for kids to visit and get educated, an environmental monitoring station is being designed and many more activities supported by UNESCO-Serres are being planned. Astropyli has passed the critical first decade of existence. It is now time for them to mature and step in the second phase: achieve the ambitious goals. We will all be there to help.

Here is my opening of this year’s event

Happy Birthday Astropyli!

The Periodic Table of Songs

Combining art to physics has been pursued by several people around the globe. Some of the works produced are spectacular and provide solid proof that physics hides a strong artistic nature in its fundamentals and vice versa. Music is also a form of art that has found a fertile ground in Physics borrowing ideas and concepts to create magnificent pieces of music. Songs and music performances often carry the names of well-known scientists or even names of the atomic elements. The latter has been the main motivation behind the project I named “The Periodic Table of Songs”.

What is the Periodic Table of Songs? Nothing but a compilation of songs and music that carry the name of elements found in the Mendeleyev’ Periodic Table of Elements, in the version existing shortly after the recent announcement by IUPAC on the addition of four more elements, listed before by their numeric value in latin.

The Periodic Table of Songs

With the help of Spotify‘s music service I spent some time and tracked down songs and musical pieces carrying the name of each element, starting from Hydrogen, to  helium, all the way up to Oganesson (Z=118). There are 3 or 4 lacking a correspondence (such as Rutherfordium or Meitnerium; a pity!) to a title of a song, but overall the Periodic Table of Songs seems complete. I tried to be minimalistic in my choices, meaning I prefered songs having a title of the mere element’s name over other more popular choices that had it as part in a longer phrase.

You can find the link here. I’m always open to comments of feedback, so drop me a line if you have something to add or correct.


Η Φυσική Μαγεύει στην Αθήνα, 18-20.12.2015

διοργανώνει την εκδήλωση για αριστούχους μαθητές στις 18-19-20 Δεκεμβρίου  2015
                 …..….Στα άδυτα μονοπάτια της γνώσης………..
H  Ένωση Ελλήνων Φυσικών συνεχίζοντας τις προσπάθειες των τελευταίων ετών, διοργανώνει για έβδομη συνεχή χρονιά την  πρωτότυπη και ξεχωριστή συνάντηση αριστούχων μαθητών  Β΄ και Γ΄ Γυμνασίου και Α΄, Β΄ και Γ΄  Λυκείου του σχολικού έτους 2015  στις  18-19-20 Δεκεμβρίου  2015  στο ξενοδοχείο ΤΙΤΑΝΙΑ, Πανεπιστημίου 57 και στο ΤΕΙ Αθηνών στο Αιγάλεω ,Αγίου Σπυρίδωνος .
Σκοπός: Οι συμμετέχοντες μαθητές σε αυτή την πρωτότυπη  και δημιουργική συνάντηση θα έχουν την ευκαιρία μέσα από την άμεση επαφή τους με Διακεκριμένους  Πανεπιστημιακούς Δασκάλους να κατανοήσουν σε βάθος θέματα Σύγχρονης Φυσικής, να εισαχθούν στην σύγχρονη επιστημονική γνώση και μέθοδο, καθώς και στις έννοιες που  την συγκροτούν αποκτώντας  κριτική και συνδυαστική σκέψη. 
Προϋποθέσεις συμμετοχής: Βαθμός προαγωγής μεγαλύτερος από 15 ή καλή κατάταξη στον Πανελλήνιο Διαγωνισμό Φυσικής του έτους 2015.
Δηλώσεις συμμετοχής έως 10 Δεκεμβρίου 2015.Πρέπει να αποστείλετε την αίτηση σας ,τη φωτοτυπία της βαθμολογίας σας καθώς και το καταθετήριο τραπέζης με email στο .υπόψιν κας Γεώργα .  
Tα σχολεία θα πρέπει να στείλουν μια λίστα με τους μαθητές που θα συμμετάσχουν.(Oνοματεπώνυμο,Βαθμολογία,Τάξη) 
Kόστος συμμετοχής:80 ευρώ για μαθητές επαρχίας (διαμονή, ένα γεύμα, βεβαίωση παρακολούθησης) 
                               :20 ευρώ για μαθητές Αθήνας (ένα αναψυκτικό, ένα γεύμα ,βεβαίωση παρακολούθησης, έντυπο υλικό)    
Μπορείτε να προβείτε σε κατάθεση στον ακόλουθο λογαριασμό στην τράπεζα Εurobank :0026.0327.40.0200 253 706 IBAN:2402603270000400200253706 και στη συνέχεια να αποστείλετε το καταθετήριο με email στο  υπόψιν κας Γεώργα.   
Αργύρη Παναγιώτα,Δρ Φυσικών Επιστημών 
Αλεξόπουλος Άγγελος,Tμήμα Εκπαίδευσης Cern 
Aραβαντινός Αθανάσιος, Καθηγητής ΤΕΙ Αθηνών
Βεκίνης Γεώργιος, Ερευνητής ΕΚΕΦΕ-Δημόκριτος
Γαρδέλης Σπύρος,Αν.Καθηγητής Παν/μιου Αθηνών 
Γάτσιος Ιωάννης, Φυσικός, τ. υπεύθυνος ΕΚΦΕ Νέας Σμύρνης
Γεραλής Θεόδωρος ,Ερευνητής Δημόκριτος –ΕΚΕΦΕ 
Γιαννακόπουλος Κωνσταντίνος, Ερευνητής ΕΚΕΦΕ –Δημόκριτος
Δανέζης  Μάνος, Επίκουρος Καθηγητής Παν/μιου Αθηνών
Ευταξίας Κωνστναντίνος,τ.Καθγηττής Παν/μίου Αθηνών
Ευθυμιόπουλος Χρίστος, Ερευνητής στην Ακαδημία Αθηνών
Θεοδοσίου  Στράτος, Αν. Καθηγητής Παν/μιου Αθηνών
Ηλιόπουλος Ιωάννης, Καθηγητής Ακαδημίας στη Γαλλία
Κορατζίνoς Μιχάλης ,Διευθυντής  Ερευνών στο CERN
Κωνσταντούδης Βασίλης, Δρ Φυσικός ΕΚΕΦΕ Δημόκριτος
ΚατσήςΝικήτας ,Διευθυντής Menon gr 
Καρτάλης Κωνσταντίνος,Αν.Καθγητής Παν/μίου Αθηνών
Κόρας Ανδρέας,Δρ Φυσικών Επιστημών 
Κιτσινέλης Σπύρος, Ερευνητής ,Επικοινωνία της Επιστήμης 
Λυριτζής Ιωάννης, Καθηγητής Πανεπιστημίου Αιγαίου 
Λαζούδης Άγγελος, Ελληνογερμανική Αγωγή
Λιώνης Σπυρίδων, Εκπαιδευτικός ΠΕ 02,M.Sc Data Communication Systems 
Μακρόπουλος Κων/νος, Ομ. Καθηγητής Παν/μιου Αθηνών 
Moυσάς Ξενοφών, Καθηγητής Παν/μιου Αθηνών 
Μεταξά Μαργαρίτα, Δρ Αστρονομίας
Μερτζιμέκης Θεόδωρος,Επικ.Καθηγητής Παν/μίου Αθηνών 
Mαίστρος Κωνσταντίνης, Πειραματιστής 
Νιάρχος Παναγιώτης, Καθηγητής Παν/μιου Αθηνών 
Nίαρχος Δημήτριος,Διευθυντής ΕΚΕΦΕ Δημόκριτος
Ναυρούζογλου Μαρία,Δρ Φυσικών Επιστημών 
Πρέκκα Παναγιώτα, Επίκουρη Καθηγήτρια  Παν/μιου Αθηνών
Παπανικολάου Kωνσταντίνος, Σύμβουλος Επικοινωνίας-Παιδαγωγός.
Παπαδόπουλος Γεράσιμος, Διευθυντής έρευνας Αστεροσκοπείο Αθηνών 
Παπαδόπουλος Γεώργιος ,Εκπαιδευτικός Ελληνογερμανική Αγωγή 
Σιμόπουλος Διονύσιος, Eπιτιμ. Διευθυντής  Ευγενιδείου  Πλανηταρίου Αθηνών
Σωτηρίου Σοφοκλής,Δρ .Φυσικής, Ερευνητής στην Ελληνογερμανκή Αγωγή
Σιώμος Κωνσταντίνος,Δρ Ψυχιατρικής Πρόεδρος  Ελληνικής εταιρίας μελέτης διαταραχής εθισμού στο διαδίκτυο
Σπύρου Νικόλαος,Ομ.Καθηγητής ΑΠΘ 
Τσιτομενέας Στέφανος, Β΄ Αντιπρόεδρος της Ε.Ε.Φ, Ομ. Καθηγητής ΑΕΙ Πειραιά ΤΤ
Τσελές Δημήτριος, Καθηγητής ΑΕΙ ΠΕΙΡΑΙΑ  ΤΤ
Τσέκερης Χαράλαμπος ,Δρ Κοινωνιολογίας 
Tριμπέρης Γεώργιος, Καθηγητής Παν/μιου Αθηνών 
Φανουράκης Γεώργιος Διευθυντής ΕΚΕΦΕ Δημόκριτος 
Ψυχάρης  Σαράντος, Καθηγητής ΑΣΠΑΙΤΕ
Χριστακόπουλος Ιωάννης, Δάσκαλος Φυσικής
Xιωτίνης Νικήτας, Καθηγητής ΤΕΙ Αθηνών 
Χανιωτάκης Μανώλης BSc, Physics,MSc
Γεώργα   Αναστασία, 15.00-19.00,210-3635701

A crystal ball for a nuclear alchemist

A week ago I was invited to talk about the International Year of Light (#IYL2015). IYL2015 is luminously celebrated all around the world as directed by the United Nations, and UNESCO in particular. After the Athens Science Festival that I had the honor to be its Physics curator, where IYL2015 was celebrated for the first time in Greece, the “Astropyli” Astronomy Club in Serres decided to dedicate their annual August event to light. I talked about light and its significance from very small to very large dimensions. It was a fantastic night despite the clouds cluttering the sky till early evening. Sky was clear when my talk was over and people rushed to use telescopes and binoculars to observe the moon, the stars and nebulae at an a elevation of 1300 m. Cold it was; Gloriously joyful, too.

Here is the picture of me holding a crystal ball awarded to me at the end of my talk.
Thank you Astropyli! I have already marked my calendar for next year’s event.